The California Streets and Highways Code is the state statute that divides responsibility for public roads among California, its 58 counties, and its cities, and sets the rules for how roads are built, accessed, maintained, retired, and protected from damage. It reaches into eminent domain, tort claims against public agencies, encroachment permits, and criminal penalties for vandalism of traffic devices. If you are dealing with a driveway permit, an injury on a broken sidewalk, a proposed road closure near your property, or a citation in a double-fine zone, the answers start here.
Which Government Controls Which Road
Authority is split three ways, and it matters because the agency you deal with, the money that pays for repairs, and the agency you sue all depend on the classification.
State highways are the routes listed in SHC Section 230 and are managed by the California Department of Transportation under Division 1 of the code.1Justia Law. California Code Streets and Highways Code – Division 1 – State Highways2California Legislative Information. California Code Streets and Highways Code 230 – State Highways The California Transportation Commission programs and allocates the money and must have a final environmental document in hand before releasing funds for any project that could significantly affect the environment.3California Department of Transportation. California Transportation Commission CTC Submittal Guidance
County roads are governed by SHC Section 941. The board of supervisors is responsible for establishing, recording, constructing, and maintaining highways necessary for public convenience, but the section contains a trap for anyone assuming their road is a public one: no road becomes a county highway until the board formally accepts it into the county road system, and the county is not liable for maintaining a road it has not accepted.4California Legislative Information. California Code Streets and Highways Code SHC 941
City streets are planned, built, and maintained by city governments under Division 2.5. When new development puts more traffic on those streets, cities can charge developers to help pay for improvements under the Mitigation Fee Act, Government Code Section 66000 and following.5California Legislative Information. California Government Code 66000 – Definitions
When a public road project needs private land and the owner will not sell, the agency proceeds under California’s Eminent Domain Law, Code of Civil Procedure Section 1230.010 and following, which requires a public purpose and just compensation.6California Legislative Information. California Code of Civil Procedure 1230.010 – Eminent Domain Law If federal money is involved, the Uniform Relocation Assistance Act adds pre-negotiation appraisal, a written offer of just compensation, payment before possession, and at least 90 days’ written notice to vacate for displaced occupants.7HUD Exchange. Real Estate Acquisition and Relocation Overview in HUD Programs
Encroachments and Access to State Highways
The code defines a highway broadly. Under SHC Section 660, “highway” includes the entire width of the right-of-way, not just the paved surface.8California Legislative Information. California Code Streets and Highways Code 660 Anything you place in that right-of-way without permission is an encroachment. The definition is sweeping: towers, poles, pipelines, fences, billboards, buildings, other structures and objects, and even special events like street festivals.
If you want a driveway connecting to a state highway, you need an encroachment permit from Caltrans, which can deny the application when the proposed access creates a safety risk. For local roads, cities and counties handle access through zoning and subdivision approvals. Government Code Section 66475 lets local agencies require developers to dedicate land within a subdivision for streets, alleys, drainage, and utility easements as a condition of approval.9California Legislative Information. California Government Code 66475 Owners sometimes challenge dedications as unconstitutional takings when the required land seems out of proportion to the project’s actual impact on roads.
Suing Over a Dangerous Road Condition
If a pothole, missing sign, broken sidewalk, or other hazard on a public road injures you, the agency responsible for that road can be liable. Government Code Section 835 sets what you must prove: the dangerous condition existed at the time of the injury, it caused the injury, the risk was reasonably foreseeable, and either a government employee’s wrongful act created the danger or the entity had notice of the condition and enough time to fix it.10California Legislative Information. California Government Code 835 – Liability for Injury Caused by Dangerous Condition of Public Property
Before you sue, you have to file a written claim. Government Code Section 945.4 makes a written tort claim to the agency a prerequisite to any suit for money damages.11California Legislative Information. California Government Code 945.4 For personal injury, the deadline is six months from the date of injury. Miss that window and the right to sue is generally gone, no matter how strong the underlying case is. The agency then has 45 days to respond, and only after the claim is rejected, expressly or by silence, can you file in court. Confirm the correct agency before you file: on a county road that the board never accepted into the system, the county is not the right defendant, and on a state highway the claim goes to the state rather than the adjacent city.
Penalties Under the Code
Consequences for interfering with public roads run from administrative removal orders to felony charges.
Unauthorized Encroachments
Caltrans can immediately remove an encroachment that obstructs public use of a highway, consists of refuse, or is an unauthorized advertising sign. For other encroachments, the owner gets five days’ notice to remove the obstruction. If the owner does not comply, Caltrans can remove it and recover the expense plus $350 for every day the encroachment remained past the five-day window. When the owner disputes the encroachment or refuses removal, Caltrans can go to court to have it declared a public nuisance and abated, recovering the same $350 daily penalty plus litigation costs.12California Legislative Information. California Code Streets and Highways Code – Nuisance and Penal Provisions
Vandalism of Roads, Signs, and Signals
Deliberately damaging roads, signs, or traffic control devices is prosecuted under Penal Code Section 594. The penalties scale with the dollar amount of damage:
- Damage under $400 is a misdemeanor punishable by up to one year in county jail, a fine of up to $1,000, or both.
- Damage of $400 or more can be charged as a misdemeanor or a felony, with a fine of up to $10,000, or up to $50,000 when damage reaches $10,000 or more.13California Legislative Information. California Penal Code 594 – Vandalism
Safety Enhancement-Double Fine Zones
Some stretches of highway are designated Safety Enhancement-Double Fine Zones under Vehicle Code Section 42010. Within those zones, misdemeanor traffic fines are doubled, and infraction fines move up one category on the uniform traffic penalty schedule rather than being literally doubled. The enhancement applies only to the offenses the statute lists, including speeding, reckless driving, DUI, and improper passing, not to every traffic infraction committed in the zone.14California Legislative Information. California Code Vehicle Code 42010 – Safety Enhancement-Double Fine Zones
Toll and Express Lane Rules
SHC Section 149.5 authorizes a value-pricing program that lets single-occupant vehicles use designated HOV lanes for a fee, with tolling only during the hours the lanes are restricted to carpools. Carpools keep unrestricted access at all times, though they may need a transponder for enforcement. Toll revenue goes first to operating costs, and administrative expenses are capped at 3 percent of revenue.15California Legislative Information. California Code Streets and Highways Code SHC 149.5
When a Public Road Is Retired
A road that is no longer needed can be “vacated,” which removes its public designation and releases government control over the land. The procedure runs through SHC Sections 8300 to 8363.16California Legislative Information. California Streets and Highways Code – Part 3 Public Streets Highways and Service Easements Vacation Law
A local legislative body starts the process, either on its own or on petition. The clerk sets a hearing at least 15 days out and publishes notice describing the road, its general location, its name or common designation, and the extent of the proposed vacation.17Justia Law. California Code Streets and Highways Code 8320-8325 – General Vacation Procedure If the legislative body finds the road unnecessary for present or future public use, it may adopt a vacating resolution. That resolution can include conditions, and the clerk will not record it until those conditions are met.18California Legislative Information. California Code Streets and Highways Code 8324 Vacated roadway sometimes reverts to adjacent owners, and sometimes it is repurposed as a pedestrian path or utility easement. If you believe a vacation cuts off your access or reduces your property’s value, you have standing to challenge it.
Accessibility and Complete Streets
Federal and state law shape what agencies must build into road projects. Any public agency receiving federal funding must keep an ADA Transition Plan identifying accessibility barriers and scheduling their removal, updated periodically until the barriers are gone.19Federal Highway Administration. ADA Transition Plan and Inventory Map In practice, when a city or county resurfaces a street or rebuilds an intersection, curb ramps and crosswalks have to be brought to current standards. Caltrans requires curb ramps with a running slope no steeper than 8.3 percent, a cross slope of no more than 2.0 percent, a minimum clear width of 48 inches, and detectable warning surfaces.20California Department of Transportation. Permanent Pedestrian Facilities ADA Compliance Handbook
California’s Complete Streets Act (AB 1358) requires cities and counties, whenever they substantively revise the circulation element of a general plan, to plan for a balanced, multimodal network serving bicyclists, children, people with disabilities, motorists, commercial goods movers, pedestrians, transit riders, and seniors.21California Legislative Information. Assembly Bill 1358 – Complete Streets Act Bridge condition is scored on a separate federal scale: 7 or above is Good, 5 or 6 is Fair, and 4 or below is Poor, the classification that replaced “Structurally Deficient” in 2018.22Federal Highway Administration. Tables of Frequently Requested NBI Information