---
kind: "unit"
title: "23"
title_heading: "Highways"
key: "ch1"
level: "chapter"
label: "Chapter 1"
heading: "Federal-Aid Highways"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/23/ch1"
sections_count: 80
---

# Chapter 1 — Federal-Aid Highways

Title 23 — Highways

## Sections

- [§101. Definitions and declaration of policy](/usc/23/101.md)
- [§102. Program efficiencies](/usc/23/102.md)
- [§103. National Highway System](/usc/23/103.md)
- [§104. Apportionment](/usc/23/104.md)
- [§105. Repealed.](/usc/23/105.md)
- [§106. Project approval and oversight](/usc/23/106.md)
- [§107. Acquisition of rights-of-way—Interstate System](/usc/23/107.md)
- [§108. Advance acquisition of real property](/usc/23/108.md)
- [§109. Standards](/usc/23/109.md)
- [§110. Repealed.](/usc/23/110.md)
- [§111. Agreements relating to use of and access to rights-of-way—Interstate System](/usc/23/111.md)
- [§112. Letting of contracts](/usc/23/112.md)
- [§113. Prevailing rate of wage](/usc/23/113.md)
- [§114. Construction](/usc/23/114.md)
- [§115. Advance construction](/usc/23/115.md)
- [§116. Maintenance](/usc/23/116.md)
- [§117. Nationally significant multimodal freight and highway projects](/usc/23/117.md)
- [§118. Availability of funds](/usc/23/118.md)
- [§119. National highway performance program](/usc/23/119.md)
- [§120. Federal share payable](/usc/23/120.md)
- [§121. Payment to States for construction](/usc/23/121.md)
- [§122. Payments to States for bond and other debt instrument financing](/usc/23/122.md)
- [§123. Relocation of utility facilities](/usc/23/123.md)
- [§124. Bridge investment program](/usc/23/124.md)
- [§125. Emergency relief](/usc/23/125.md)
- [§126. Transferability of Federal-aid highway funds](/usc/23/126.md)
- [§127. Vehicle weight limitations—Interstate System](/usc/23/127.md)
- [§128. Public hearings](/usc/23/128.md)
- [§129. Toll roads, bridges, tunnels, and ferries](/usc/23/129.md)
- [§130. Railway-highway crossings](/usc/23/130.md)
- [§131. Control of outdoor advertising](/usc/23/131.md)
- [§132. Payments on Federal-aid projects undertaken by a Federal agency](/usc/23/132.md)
- [§133. Surface transportation block grant program](/usc/23/133.md)
- [§134. Metropolitan transportation planning](/usc/23/134.md)
- [§135. Statewide and nonmetropolitan transportation planning](/usc/23/135.md)
- [§136. Control of junkyards](/usc/23/136.md)
- [§137. Fringe and corridor parking facilities](/usc/23/137.md)
- [§138. Preservation of parklands](/usc/23/138.md)
- [§139. Efficient environmental reviews for project decisionmaking and One Federal Decision](/usc/23/139.md)
- [§140. Nondiscrimination](/usc/23/140.md)
- [§141. Enforcement of requirements](/usc/23/141.md)
- [§142. Public transportation](/usc/23/142.md)
- [§143. Highway use tax evasion projects](/usc/23/143.md)
- [§144. National bridge and tunnel inventory and inspection standards](/usc/23/144.md)
- [§145. Federal-State relationship](/usc/23/145.md)
- [§146. Carpool and vanpool projects](/usc/23/146.md)
- [§147. Construction of ferry boats and ferry terminal facilities](/usc/23/147.md)
- [§148. Highway safety improvement program](/usc/23/148.md)
- [§149. Congestion mitigation and air quality improvement program](/usc/23/149.md)
- [§150. National goals and performance management measures](/usc/23/150.md)
- [§151. National electric vehicle charging and hydrogen, propane, and natural gas fueling corridors](/usc/23/151.md)
- [§152. Hazard elimination program](/usc/23/152.md)
- [§153. Use of safety belts and motorcycle helmets](/usc/23/153.md)
- [§154. Open container requirements](/usc/23/154.md)
- [§155. Repealed.](/usc/23/155.md)
- [§156. Proceeds from the sale or lease of real property](/usc/23/156.md)
- [§157. National Environmental Policy Act of 1969 reporting program](/usc/23/157.md)
- [§158. National minimum drinking age](/usc/23/158.md)
- [§159. Revocation or suspension of drivers’ licenses of individuals convicted of drug offenses](/usc/23/159.md)
- [§160. Repealed.](/usc/23/160.md)
- [§161. Operation of motor vehicles by intoxicated minors](/usc/23/161.md)
- [§162. National scenic byways program](/usc/23/162.md)
- [§163. Safety incentives to prevent operation of motor vehicles by intoxicated persons](/usc/23/163.md)
- [§164. Minimum penalties for repeat offenders for driving while intoxicated or driving under the influence](/usc/23/164.md)
- [§165. Territorial and Puerto Rico highway program](/usc/23/165.md)
- [§166. HOV facilities](/usc/23/166.md)
- [§167. National highway freight program](/usc/23/167.md)
- [§168. Integration of planning and environmental review](/usc/23/168.md)
- [§169. Development of programmatic mitigation plans](/usc/23/169.md)
- [§170. Funding flexibility for transportation emergencies](/usc/23/170.md)
- [§171. Wildlife crossings pilot program](/usc/23/171.md)
- [§172. Wildlife-vehicle collision reduction and habitat connectivity improvement](/usc/23/172.md)
- [§173. Rural surface transportation grant program](/usc/23/173.md)
- [§174. State human capital plans](/usc/23/174.md)
- [§175. Carbon reduction program](/usc/23/175.md)
- [§176. Promoting Resilient Operations for Transformative, Efficient, and Cost-saving Transportation (PROTECT) program](/usc/23/176.md)
- [§177. Neighborhood access and equity grant program](/usc/23/177.md)
- [§178. Environmental review implementation funds](/usc/23/178.md)
- [§179. Low-carbon transportation materials grants](/usc/23/179.md)
- [§181...190. Renumbered §§ 601 to 610](/usc/23/181...190.md)