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La. Rev. Stat. § 48:191 (2026)

State highway system; length; designation

✓ laws through the 2025 Regular Session (checked Sept. 2026)
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§191. State highway system; length; designation

           A. There is hereby created and established a system of state highways which shall consist of fourteen functional classifications as follows:

           (1) Urban highways described as:

           (a) Urban-principal arterial-interstate.

(b) Urban-principal arterial-other freeways and expressways.

(c) Urban-principal arterial-other.

(d) Urban-minor arterial.

(e) Urban-major collector.

(f) Urban-minor collector.

           (g) Urban-local.

(2) Rural highways described as:

(a) Rural-principal arterial-interstate.

(b) Rural-principal arterial-other freeways and expressways.

(c) Rural-principal arterial-other.

(d) Rural-minor arterial.

(e) Rural-major collector.

(f) Rural-minor collector.

           (g) Rural-local.

           B. The total length of the fourteen functional systems shall not exceed sixteen thousand six hundred seventy-five miles, and the additional length permitted herein is allowed solely for the purpose of adjustments that might become necessary from time to time within the sole discretion of the secretary, working in conjunction with the police juries or municipalities.

           C. The location of all highways in the functional systems established hereby may be altered and amended by the secretary to such an extent and in such a manner as may be necessary for the purpose of meeting any requirements in order to obtain federal aid for road construction in Louisiana. The system of state highways created hereby shall consist of the above fourteen functional systems and the department shall maintain its current description in conformance with the same.

           Amended by Acts 1955, No. 40, §2; Acts 1979, No. 187, §1; Acts 1993, No. 549, §1, eff. June 10, 1993; Acts 1997, No. 1028, §1, eff. July 11, 1997; Acts 2019, No. 375, §1, eff. August 1, 2019.

Notes of Decisions
Cited in 38 cases, 1968–2007 · leading case: Ratliff v. State Ex Rel. DOTD, 844 So. 2d 926 (La. Ct. App. 2003).
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Ratliff v. State Ex Rel. DOTD, 844 So. 2d 926 (La. Ct. App. 2003). · cites it 3× “The department is fully authorized through its officers and officials to enter into all contracts and agreements with municipalities, parishes, road districts, or other public agencies of the state of Louisiana or of the United States, and all private individuals, partnerships,…”
Myers v. State Farm Mut. Auto. Ins. Co., 493 So. 2d 1170 (La. 1986). “At the point where the accident occurred, Greenwell Springs Road is straight and has two lanes each of which is 12 feet wide with a one-to-two-foot wide shoulder.”
Aucoin v. State Through Dept. of Transp. & Dev., 712 So. 2d 62 (La. 1998). “R.S. 48:191, received federal money for the reconstruction project.”
Williams v. City of Monroe, 658 So. 2d 820 (La. Ct. App. 1995). “(2) The chief engineer may designate those highways as listed in R.S. 48:191 on the effective date of this Section for reconstruction or repair at standards which are less than those as approved by the American Association of State Highway and Transportation Officials; however,…”
Hebert v. Rapides Par. Police Jury, 934 So. 2d 912 (La. Ct. App. 2006). · cites it 2× “R.S. 48:191; and La.R.S. 48:193. Where the road or bridge is not on the state highway system and falls within a parish but outside the corporate limits of any municipality, a duty to maintain the road or bridge falls on the parish.”
Charan v. Bowman, 965 So. 2d 466 (La. Ct. App. 2007). · cites it 5× “Clary explained that based on Louisiana Highway 1's classification as a "Class A" bridgeway in LSA-R.S. 48:191, which is the highest classification given to a roadway in the statute, DOTD was required to construct the bridge to the equivalent class of roadway in applicable…”
Wall v. Am. Employers Ins. Co., 215 So. 2d 913 (La. Ct. App. 1969). · cites it 2× “48, which define the authority, functions and duties of the Department, namely, LSA-R.S. 48:191, when construed in conjunction with the terms of LSA-R.”
Robertson v. Handy, 354 So. 2d 626 (La. Ct. App. 1978). “It is the contention of the State that the condition of the shoulder was not hazardous to a reasonably prudent driver; that there was no notice, actual or constructive, of the defect to either the State or the City; and that there was no causal connection between the condition…”
Everett v. Louisiana Dept. of Transp., Etc., 424 So. 2d 336 (La. Ct. App. 1982). “-R.S. 48:191. As such, the shoulder and road of La.”
Holloway v. State, Dept. of Trans., 555 So. 2d 1341 (La. 1990). “The roadside ditch has a fore slope of four to one meaning it slopes one unit for every four horizontal units.”
Hall v. State, Dep't of Highways, 213 So. 2d 169 (La. Ct. App. 1968). “, those designated as such by LSA-R.S. 48:191), because its statutory general function is "to study, administer, construct, improve, maintain, repair and regulate the use of the state highway system * * *.”
Smith v. State, Through Dept. of Transp., Etc., 412 So. 2d 685 (La. Ct. App. 1982). “34 is a state highway, LSA-R.S. 48:191, and as such it is in the care and custody of the Department.”
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