GIBSON, C. J.
By this action for an injunction, plaintiff county is seeking to compel defendant telephone company to obtain a county franchise and to pay for the privilege of maintaining its lines and poles on streets and highways outside of incorporated areas. Defendant claims it was granted this privilege by section 536 of the Civil Code as amended in 1905,
In the years 1903-1905, the county issued five franchises for telephone lines, and these were thereafter conveyed to the defendant telephone company. Three of the franchises terminated before this action was commenced, and a fourth [381]*381expired before the trial. The fifth franchise by its terms is still in effect, but the area which it covers was expressly excluded from this controversy by the complaint. Only one of the franchises required the payment of a percentage of the gross receipts derived from the use of the privilege, and the company made the payments, as provided, until expiration of the period specified therein. The company and its predecessors, at least since 1909, have specifically relied on section 536 for their authority when applying for permits to locate or change poles or lines on the highway. Further, from 1905 until about the time of the filing of the complaint, except for six years, the county assessed and levied property taxes on the franchise claimed by defendant and its predecessors under that section.
The questions to be decided are: First, what is the effect of section 536? Second, was section 536 repealed by the Broughton Act?* Third, if section 536 is construed as granting a franchise to defendant, is it unconstitutional (a) as being a gift in violation of sections 22 and 31 of article IV of the California Constitution or (b) as denying equal protection of the laws and constituting an invalid grant of special privileges in violation of the 14th Amendment to the federal Constitution and sections 11 and 21 of article I and section 25 of article IV of the California Constitution?
Section 536 was originally enacted at the time of the adoption of the codes in 1872, but similar provisions had existed for many years prior thereto. (See Stats. 1850, p. 369; Stats. 1857, p. 171.) When first enacted the section applied only to telegraph corporations. It made no mention of telephone companies, and it did not grant any rights to such companies prior to 1905, when the section was repealed and reenacted to apply to both telegraph and telephone corporations. (See Sunset Tel. & Tel. Co. v. Pasadena, 161 Cal. 265 [118 P. 796].) As applied to telegraph companies, it has been held that section 536, as it existed prior to 1905, was [382]*382effectual to grant a state franchise, and that the use of the highways, and the maintenance and operation of the telegraph system, constituted an acceptance of the provisions of the statute and resulted in a contract between the company and the state which was secured by the federal Constitution against impairment by subsequent state legislation. (See Western Union Tel. Co. v. Hopkins, 160 Cal. 106 [116 P. 557]; Western Union Tel. Co. v. Visalia, 149 Cal. 744 [87 P. 1023]; Postal Tel. Cable Co. v. Los Angeles, 160 Cal. 129 [116 P. 566]; Sunset Tel. & Tel. Co. v. Pomona, 172 F. 829, 837; Postal Tel. Cable Co. v. Railroad Com., 200 Cal. 463 [254 P. 258].)
The purpose of the change in 1905 was to add telephone corporations to the section, and, except for this extension, there is nothing in the amendment to indicate any intention to alter the effect and operation of the statute.* (See City of Salinas v. Pacific Tel. & Tel. Co., 72 Cal.App.2d 494, 497 [164 P.2d 905].) In view of the construction given to this section as it existed prior to 1905, and the absence of other changes, it must be held that the intention was to offer the grant of a franchise to telephone as well as telegraph companies upon acceptance by the construction and operation of communication facilities.
A question has arisen, however, as to whether section 536 was repealed by the Broughton Act, which was adopted at the same session at which section 536 was amended. The act does not contain any provision expressly repealing that section, and it was not repealed by implication unless the statutes are so repugnant they cannot stand together. The Legislature was considering the statutes at the same time and must have intended to give effect to both. In County of Inyo v. Hess, 53 Cal.App. 415 [200 P. 373], it was held that section 536 was not repealed by the Broughton Act but that the statutes could operate in separate fields. The court said at page 425 “that under and by virtue of the provisions of section 536 of the Civil Code, telephone corporations are granted the right and privilege to use the public highways over which to construct and operate lines of telephone wires, [383]*383free from any grant made by subordinate legislative bodies, and unrestricted by the provisions of the Broughton Act. . . .” The court also declared that section 536 was intended as a legislative grant limited in operation to telegraph and telephone corporations, as distinguished from individuals. This construction is supported by the specific terms of the section which refers only to “telegraph or telephone corporations.”
The Broughton Act, unlike section 536, does not grant any right or privilege, nor does it purport to empower or authorize boards of supervisors to grant franchises or other privileges, but instead indicates an intent to limit and restrict the powers which may have been granted under other laws by specifying the procedure which must be followed and the conditions which must be imposed in the granting of any franchises by subordinate legislative bodies. The court stated in Oro Electric Corp. v. Railroad Com., 169 Cal. 466, at pages 482-483 [147 P. 118], that “this act merely places restrictions upon the granting of franchises, where the power to grant such franchises exists otherwise. As was said in Sunset Tel. & Tel. Co. v. Pasadena, 161 Cal. 265, 272 [118 P. 796], the ‘whole purpose' of the act ‘was to prescribe the method' and conditions upon which the franchises included within its terms might be granted by the legislative body authorized by law to make the grant.’ The act does not authorize any board or council to grant a franchise.” (See also McGinnis v. Mayor and Common Council, 153 Cal. 711, 713-714 [96 P. 367]; City of San Diego v. Kerckhoff, 49 Cal.App. 473, 482 [193 P. 801].)
Since the Broughton Act is thus limited in operation to those franchises which subordinate legislative bodies are authorized to grant under other laws, it cannot be construed as applicable to statutory franchises which are not granted by such bodies but which, as in the case of the franchise involved here, are granted directly by the Legislature. The two statutes were enacted for separate purposes and occupy separate fields, and both can be given effect. There is, therefore, no such repugnance between the acts as would require a determination that there was any implied repeal. Accordingly, defendant is entitled to use the streets and highways in unincorporated areas of the county, by reason of its franchise under section 536, unless that section, as claimed, is unconstitutional.
The county contends that the Legislature is prohibited by [384]*384sections 22 and 31 of article IV of the California Constitution* from granting a free franchise and that since no compensation is required to be paid for the rights acquired under section 536, the statute is unconstitutional. It does not follow, however, that because telephone and telegraph companies are permitted without charge to construct lines along the highways the privilege granted is a gift. The franchise is conditioned not only on the establishment of lines by a telegraph or telephone corporation, but also, by necessary implication, on the continued operation of the system. The grant under section 536 must be construed in favor of the state. (Civ. Code, § 1069.) As so construed it must be held to be a grant to use public roads and highways so long as telegraph or telephone communication service is continued and that the acceptance of the franchise involves an assumption of the duty to furnish proper and adequate communication service to the public. Obviously, the state receives a substantial benefit from the continued operation of such a system, and the question is whether, notwithstanding that benefit, the grant comes within the constitutional prohibition.
Section 536 has been judicially construed by many decisions of this court, and it has been uniformly held that the statute is a continuing offer extended to telephone and telegraph companies to use the highways, which offer when accepted by the construction and maintenance of lines constitutes a binding contract based on adequate consideration, and that the vested right established thereby cannot be impaired by subsequent acts of the Legislature. (Western Union Tel. Co. v. City of Visalia, 149 Cal. 744 [87 P. 1023]; Western Union Tel. Co. v. Hopkins, 160 Cal. 106 [116 P. 557]; Western Union Tel. Co. v. County of Los Angeles, 160 Cal. 124 [116 P. 564]; Postal-Telegraph Cable Co. v. County of Los Angeles, 160 Cal. 129 [116 P. 566]; Postal Telegraph-Cable Co. v. Los Angeles, 164 Cal. 156 [128 P. 19]; Sunset Tel. & Tel. Co. v. Pasadena, 161 Cal. 265 [118 P. 796]; Postal-Tele[385]*385graph Cable Co. v. Railroad Com., 200 Cal. 463 [254 P. 258]; see People v. Turlock Home Tel. & Tel. Co., 200 Cal. 546 [253 P. 1108]; County of Inyo v. Hess, 53 Cal.App. 415 [200 P. 373]; State of California v. Marin Mun. W. Dist., 17 Cal.2d 699 [111 P.2d 651].)
The nature of the rights and privileges arising from section 536, as interpreted by the cases just cited, is stated in Postal-Telegraph Cable Co. v. Railroad Com., 200 Cal. 463, at pages 472-473 [254 P. 258], as follows: “This section [536] constitutes a grant of a franchise which the state offered, and petitioner accepted by the construction of its lines. The rights acquired by the Telegraph Company, by accepting and availing itself of the provisions of the section, are vested rights which the constitutions, both state and federal, protect. They cannot be taken away by the state, even though the legislature should repeal the section, or by the people through a constitutional provision. . . . The finding of the respondent Commission of the physical fact that petitioner was maintaining and operating its lines of telegraph over the roads and highways of the state establishes, as a matter of law and fact, the proposition that it has accepted and owns a state franchise for that purpose, which was offered to it by section 536, supra. . . . The grant, resulting from the acceptance of the state offer, constituted a contract between the Telegraph Company and the state, secured by the constitution of the United States against impairment by any state legislation.” (See also City of Beverly Hills v. Los Angeles, 175 Cal. 311 [165 P. 924].)
The prevalence of legislative grants to public utilities of the privilege of using streets and highways is shown by the following statement in State of California v. Marin Mun. W. Dist., 17 Cal.2d 699, 703 [111 P.2d 651]: “The right obtained by defendant from these sources is a right conferred by the legislature to construct and operate pipe lines along the public highways of the state. Such a grant by the state to a public utility . . . has always been considered a franchise by the courts of this state. The right granted to municipal corporations by the statute of 1923 to use the public highways was held a franchise in Los Angeles v. South Gate, 108 Cal.App. 398 [291 P. 654]. The right granted to public utilities by article XI, section 19 of the . . . Constitution . . . was held a franchise in San Jose Gas Co. v. January, 57 Cal. 614. . . . The right granted to telephone and telegraph companies [386]*386by . . . section 536 [Civ. Code] . . . was held a franchise in Western Union Tel. Co. v. Hopkins, 160 Cal. 106 [116 P. 557]; Sunset Tel. & Tel. Co. v. Pasadena, 161 Cal. 265 [118 P.796], and Postal-Telegraph Cable Co. v. Los Angeles, 164 Cal. 156 [128 P. 19]. The right granted to irrigation districts by a 1923 statute . . . for power lines was held a franchise in Winkie v. Turlock Irr. Dist., 24 Cal.App.2d 1 [74 P.2d 302].”
The courts of other jurisdictions have held that the statutory offer of a franchise when accepted by the construction and operation of a public utility results in a valid contract secured by the federal Constitution against impairment. (New York Electric Lines Co. v. Empire Subway Co., 235 U.S. 179, 193 [35 S.Ct. 72, 59 L.Ed. 184]; City Railway Co. v. Citizens' Street Railroad Co., 166 U.S. 557, 567 [17 S.Ct. 653, 41 L.Ed. 1114]; Chicago Gen. Ry. Co. v. City of Chicago, 176 Ill. 253, 259 [52 N.E. 880, 68 Am.St.Rep. 188, 66 L.R.A. 959]; see State v. Southwestern Bell Telephone Co., 338 Mo. 617 [92 S.W.2d 612]; Arkansas State H. Com'n. v. Southwestern Bell T. Co., 206 Ark. 1099 [178 S.W. 2d 1002].)
The county seeks to avoid the effect of the long line of cases holding that the acceptance of the offer contained in section 536 and similar statutes resulted in a valid contract by asserting that those cases did not take into consideration the constitutional prohibition against gifts of public property and its historical background. It is argued that sections 22 and 31 of article IY of the state Constitution were enacted to prevent the waste of public funds and property by the appropriation of subsidies to railroads and other corporations, and that the privilege of using the highways for telephone lines is, in effect, a subsidy to a corporation operated for private profit. Although none of the opinions of this court construing section 536 discussed the possible effect of sections 22 and 31 of article IY, it would seem unlikely that the many judges and counsel participating in those cases entirely overlooked the legality of the consideration involved, since that was an essential requisite in each case to the holding that the acceptance of the offer of a franchise resulted in a valid contract.
In support of its contention that a public benefit cannot be a valid consideration for the grant of a limited privilege to use the highways for the construction and maintenance of telephone lines, the county relies upon the ease of Higgins v. San Diego Water Co., 118 Cal. 524 [45 P. 824, 50 P. 670], asserting that the consideration involved there is identical [387]*387with that which must be urged to support the contract in the present case. The city of San Diego subleased from defendant water company its distributing system for the term of 20 years at a fixed monthly rental, and the company agreed as part of the consideration that it would construct a railroad line. The agreement was held to be invalid on the ground that the charter of San Diego conferred no authority upon the council to expend any portion of the municipal funds in aiding the building of railroads. The court expressly declined to determine whether the contract violated the constitutional prohibition against gifts, and the decision therefore is not authority here. There is language in the opinion, however, which intimates that some of the evils which the constitutional restriction was designed to prevent were present in the transaction involved in that ease.
Courts in other jurisdictions with similar constitutional prohibitions have held in factual situations comparable to that involved in the Higgins case that the general public benefit derived from the construction of a public utility system is insufficient consideration to support direct appropriations of public money, extensions of public credit, or outright grants of property. (Lord v. Denver, 58 Colo. 1 [143 P. 284, Ann.Cas. 1916C 893, L.R.A. 1915B 306]; Colorado Central R. R. Co. v. Lea, 5 Colo. 192; Southern Railway Co. v. Hartshorne, 162 Ala. 491 [50 So. 139]; Stone v. State, 223 Ala. 426 [136 So. 727].) On the other hand, the only cases which have considered franchises of the character involved here hold that the grants are valid and do not contravene constitutional prohibitions against gifts. (State v. Southwestern Bell Telephone Co., 338 Mo. 617 [92 S.W.2d 612]; State v. Union Electric Co. of Missouri (Mo.App.), 142 S.W.2d 1099; Arkansas State H. Com'n. v. Southwestern Bell T. Co., 206 Ark. 1099 [178 S.W.2d 1002].)
There appears to be some basis for the distinction although it has not been pointed out in the cases. A franchise such as is authorized by section 536 is not an absolute grant in fee or an appropriation of money, but is merely a limited right to use the highways and only to the extent necessary for the furnishing of services to the public. Also, the privilege must be exercised “in such manner and at such points as not to incommode the public use of the road or highway.” (Civ. Code, § 536.) It is obvious that the right acquired by the company is of less substance than the transfers involved in [388]*388the cited cases which condemn appropriations of money and grants in fee.
Moreover, the state is assured of a continuing benefit in return for the privileges granted under section 536, whereas this may not be true in transactions involving an outright appropriation or transfer in fee. The company must not only construct a telephone system but it must render service, and if it fails to do so the franchise terminates. Thus the state receives benefits during the life of the franchise, since in order to retain it the company must continue to serve the public. If and when the public benefit ceases and the franchise expires, the state is in as good a position as it was before the limited privilege was granted. The building of a public utility and the consequent benefit to the people may not be a sufficient consideration to support a grant in fee, but it does not follow that the benefit received from the construction and continued operation of a telephone system is not an adequate return for the use of the highways so long as the public service continues.
Since the offer of a franchise in section 536, when accepted, results in a binding agreement supported by a valid consideration, there is no gift within the meaning of the constitutional prohibitions.
It is further urged that section 536, insofar as it applies only to corporations and not to individuals, improperly grants special privileges and invalidly discriminates in favor of corporations. It is asserted that the section violates the equal protection clause of the 14th Amendment to the federal Constitution, and also that it is invalid under article I, sections 11 and 21, and article IV, section 25, subdivisions 19 and 33 of the state Constitution.*
These provisions of the state and federal Constitutions do not prevent classification by the Legislature, nor do they require that statutes operate uniformly with respect to persons [389]*389or things which are in fact different. (People v. Western Fruit Growers, 22 Cal.2d 494 [140 P.2d 13]; McCreery v. McColgan, 17 Cal.2d 555 [110 P.2d 1051, 133 A.L.R. 800]; In re Fuller, 15 Cal.2d 425 [102 P.2d 321]; Bueneman v. City of Santa Barbara, 8 Cal.2d 405 [65 P.2d 884, 109 A.L.R. 895]; Tigner v. Texas, 310 U.S. 141 [60 S.Ct. 879, 84 L.Ed. 1124]; Puget Sound Co. v. Seattle, 291 U.S. 619 [54 S.Ct. 542, 78 L.Ed. 1025]; Radice v. New York, 264 U.S. 292 [44 S.Ct. 325, 68 L.Ed. 690]; Arkansas Nat. Gas Co. v. Railroad Com., 261 U.S. 379 [43 S.Ct. 387, 67 L.Ed. 705].)
The problem presented by the difference in treatment accorded corporations and individuals under section 536 was directly passed upon in Western Union Tel. Co. v. Hopkins, 160 Cal. 106 [116 P. 557], and Postal Tel. Cable Co. v. Los Angeles, 160 Cal. 129 [116 P. 566], where the claim was made that section 536 was invalid because the offer of a franchise contained therein was limited to corporations. In the Hopkins ease the court, in holding that there was no violation of the constitutional provisions relating to special legislation, said (p. 122): “We may reasonably assume that good and sufficient reasons may be apparent to the legislature why the right to exclusively occupy portions of the public highways for the purposes specified should be confined to corporations organized and existing for the purpose of doing a telegraph business, and why such corporations constitute a class to which such a grant may properly be restricted without violating our constitutional provisions against special legislation. If it may reasonably be so assumed the legislation must be upheld, for it is well settled that to warrant a court in adjudging legislation void on this ground it must clearly appear that there was no sufficient reason to warrant the legislative department in finding a difference and making the discrimination. Every presumption is in favor of the validity of an act of the legislature, until its invalidity is made to appear.”
Although the Hopkins case makes no specific reference to the equal protection clause of the 14th Amendment, it is clear that the test for determining the validity of a statute where a claim is made that it unlawfully discriminates against any class is substantially the same under the state prohibitions against special legislation and the equal protection clause of the federal Constitution. (People v. Western Fruit Growers, 22 Cal.2d 494, 506 [140 P.2d 13]; see McCreery v. McColgan, [390]*39017 Cal.2d 555 [110 P.2d 1051, 133 A.L.R. 800]; In re Fuller, 15 Cal.2d 425 [102 P.2d 321]; Bueneman v. City of Santa Barbara, 8 Cal.2d 405 [65 P.2d 884, 109 A.L.R. 895].) In the Western Fruit Growers ease the court, after noting the general rules on this subject, stated: “Problems of classification under the California Constitution are thus similar to those presented by the federal equal protection of the laws clause of the 14th Amendment. Under either provision, the mere production of inequality which necessarily results to some degree in every selection of persons for regulation does not place the classification within the constitutional prohibition. The discrimination or inequality produced, in order to conflict with the constitutional provisions, must be ‘actually and palpably unreasonable and arbitrary, ’ or the legislative determination as to what is a sufficient distinction to warrant the classification will not be overthrown. [Citations.] When a legislative classification is questioned, if any state of facts reasonably can be conceived that would sustain it, there is a presumption of existence of that state of facts, and the burden of showing arbitrary action rests upon the one who assails the classification.” (22 Cal.2d 494, 506.)
It is argued, however, that the portion of the opinion in the Hopkins case dealing with the assertedly invalid distinction between individuals and corporations was dictum for the reason that the telegraph company had commenced business and acquired rights under the Constitution of 1849, which contained no inhibition against special legislation. However, in the companion case of Postal Tel. Cable Co. v. Los Angeles, 160 Cal. 129 [116 P. 566], decided at the same time and controlled by the Hopkins decision, the plaintiff company did not commence business or acquire any rights until after the adoption of the Constitution of 1879, and therefore the issue was necessarily before the court.
The reasons which may have motivated the enactment of section 536 were not discussed in the Hopkins case, but it must be presumed that the Legislature acted in response to a reasonable basis for classification and that the differentiation was based on adequate grounds if any such basis can reasonably be said to exist. There is ample justification for treating corporations differently from individuals in granting franchises for the operation of telephone and telegraph systems, and there is a reasonable basis for the classification of corporations as the sole recipients of the grant offered in section 536. Cor[391]*391porations are in a better position than individuals to finance and carry on statewide projects of this nature, they are more easily regulated and supervised, and they have much greater permanency of existence and can give better assurance of uninterrupted service. It may be that one of the purposes of section 536 was to promote the establishment of statewide communication systems, and the use of corporate ownership and management may have been considered the best method of achieving that purpose.
Statutes similar to section 536, and applying to telephones and telegraphs or to railroads, exist in most of the other states of the Union, but no case has been found in which such a statute was held unconstitutional on the ground of improper discrimination. On the contrary, where the objection has been raised, the power to limit the granting of franchises has been upheld. In Goddard v. Chicago & N. W. Ry. Co., 202 Ill. 362 [66 N.E. 1066], an act provided that a street railroad corporation might use the streets and highways outside of cities and towns with the consent of the county board, but did not authorize such use by individuals. It was held that the Legislature by limiting grants to incorporated companies did not violate the state or federal Constitutions. Other courts have held that banking, insurance and similar businesses may be restricted to corporations. (See Noble State Bank v. Haskell, 219 U.S. 104 [31 S.Ct. 186, 55 L.Ed. 112]; Shallenberger v. First State Bank, 219 U.S. 114 [31 S.Ct. 189, 55 L.Ed. 117]; Engel v. O'Malley, 219 U.S. 128 [31 S.Ct. 190, 55 L.Ed. 128]; Dillingham v. McLaughlin, 264 U.S. 370, 373 [44 S.Ct. 362, 68 L.Ed. 742]; German Alliance Ins. Co. v. Lewis, 233 U.S. 389, 416 [34 S.Ct. 612, 58 L.Ed. 1011]; Commonwealth v. Vrooman, 164 Pa. 306 [30 A. 217, 44 Am.St.Rep. 603, 25 L.R.A. 250]; Brady v. Mattern, 125 Iowa 158 [100 N.W. 358, 106 Am.St.Rep. 291].)
There are general statements in Frost v. Corporation Com., 278 U.S. 515 [49 S.Ct. 235, 73 L.Ed. 483], which, detached from their context, may appear to be out of harmony with the authorities cited above. The ease, however, is clearly distinguishable. The legislation condemned in that decision exempted agricultural corporations issuing stock and organized for private gain, as well as true cooperatives, from the requirement of making a showing of public necessity in order to obtain a permit to operate a cotton gin. Individuals and other [392]*392corporations desiring to engage in the same business for profit were required to make the showing. The corporation involved in the Frost case was an agricultural company issuing stock and organized for private gain. The court intimated that true cooperatives might be properly exempted but held that, in view of the subject dealt with by the legislation, there was no substantial or relevant basis for the differentiation between an agricultural corporation of the type there involved and individuals or other corporations organized for profit. The subject involved in the Frost case is entirely different from that dealt with in section 536. As we have seen, there are sound purposes to be served in encouraging the corporate operation of telephone systems, and the classification complained of cannot, therefore, be said to be unreasonable or arbitrary.
The rule that all presumptions are in favor of the validity of statutes and that a classification made by the Legislature will not be overthrown by the courts unless it is palpably unreasonable has added force when, as here, the statute has been accepted as valid for many years, and vast sums have been invested in reliance upon the rights granted. In Willard v. Glenn-Colusa Irr. Dist., 201 Cal. 726 [258 P. 959], where attack was made on the constitutionality of section 55 of the California Irrigation District Act, and the court said (pp. 743-744): “It has been upon the statute books of this state for over forty years. While its constitutionality has never been passed upon by this court, this question, so far as our knowledge goes, has never been raised. It is hardly possible that in all the litigation that has been before the courts of this state regarding irrigation districts in their various ramifications, the validity of this provision of the statute would not have been attacked had there been any question of its constitutionality. The fact that no proceeding prior to the present one has ever been brought before this or any of the appellate courts of this state in which the constitutionality of this provision of the statute has been questioned is most convincing proof that the profession as a whole has regarded its validity unassailable. ’ ’
Stronger and even more convincing proof may be found in the legal history of section 536. Its provisions relating to telegraph companies have been in existence since 1872, and those applying to telephone companies have been in effect since 1905. The constitutionality of the section has been im[393]*393pliedly upheld by many decisions of this court, and in the few instances where a direct challenge has been made it has withstood the attack. These decisions have been acquiesced in and acted upon for more than 40 years and have become something aldn to a rule of property which should not be disturbed in the absence of the most compelling and cogent reasons. We find no such reasons here.
The judgment is affirmed.
Shenk, J., Traynor, J., Schauer, J., and Spence, J., concurred.
Edmonds, J., concurred in the judgment.
Seetion 536 of the Civil Code as amended in 1905 provides that 11 Telegraph or telephone corporations may construct lines of telegraph, or telephone lines along and upon any public road or highway, along or across any of the waters or lands within this state, and may erect poles, posts, piers, or abutments for supporting the insulators, wires, and other necessary fixtures of their lines, in such manner and at such points as not to incommode the public use of the road or highway or interrupt the navigation of the waters.”