California DOT Standard Specifications
Caltrans publishes 15 documents in the BuildSpec California library: the standard specification book that governs materials, methods, measurement and payment on state-funded highway work, together with the standard drawings, design and construction manuals, and materials/testing references that are administered alongside it. 83 sections across 1 of those document are published here in full and read section by section — free, no download, no account.
Standard specifications are state-authored public documents. BuildSpec republishes them with the canonical Caltrans source link on every page, and archives prior editions where Caltrans still publishes them — a project bid in a prior year is still administered under the edition named in its contract. Always confirm the edition and supplement date named in your contract, and check Caltrans’s own errata for revisions issued after printing.
Standard Specifications
1 documentOfficial specification books governing materials and methods
Caltrans' book of Standard Specifications governs all materials, methods, and measurement/payment for highway construction projects awarded under the 2025 edition. Organized in divisions I through XI covering general provisions, earthwork, structures, drainage, pavements, and electrical work.
Standard Plans
1 documentEngineering detail sheets for typical construction items
Standard Plans (formerly Standard Details) are the pre-engineered detail sheets used to reference typical construction items in contract plans. California uses the term "Standard Plans" rather than "Standard Drawings." Complete book — 638 pages.
PDFagency link only — not yet ingested4 archived prior editionsPDF / DGN also publishedOfficial Caltrans source
Design Manuals
2 documentsRoadway, bridge, drainage, and traffic design guidance
The HDM establishes uniform policies and procedures for geometric, roadside, and structural design of state highways. Organized in chapters covering design controls, highway alignment, cross-section elements, drainage design, and landscape architecture.
The PPM establishes the format, content, and preparation procedures for plans, specifications, and estimates (PS&E) packages submitted to Caltrans.
Construction Manuals
1 documentField inspection and construction administration guides
The Construction Manual guides Caltrans Resident Engineers and field inspectors through project administration, measurement and payment, materials acceptance, and contract change orders.
California Test Methods
1 documentSampling, testing, and material acceptance requirements
California Test Methods are the state-specific testing procedures used for acceptance of aggregates, asphalt, concrete, soils, and chemistry. CTM numbers (e.g., CTM 202, CTM 540) are referenced directly in the Standard Specifications.
Revised Standard Specifications (RSS)
1 documentSupplemental specifications and boilerplate provisions
RSS are the ongoing revisions and errata to the current Standard Specifications book. Projects advertised after an RSS effective date must incorporate the revised text.
Federal Standards
8 documentsMUTCD, ADA/PROWAG, NBIS, and other public-domain federal standards
The MUTCD defines the standards used by road managers nationwide to install and maintain traffic control devices on all public streets, highways, bikeways, and private roads open to public travel. It covers signs, signals, markings, and temporary traffic control. The 11th Edition was published in December 2023 with a compliance deadline of May 2026.
Complete text of the 11th Edition Manual on Uniform Traffic Control Devices in PDF format. Includes all parts covering general provisions, signs, markings, signals, temporary traffic control, school zones, railroad crossings, and traffic control for bicycle facilities.
The Americans with Disabilities Act (ADA) accessibility standards govern the design of transportation facilities including curb ramps, sidewalks, pedestrian signals, transit stops, and rail stations. These requirements are incorporated into all state DOT design standards.
PROWAG provides accessibility guidelines for pedestrian facilities in the public right-of-way, including sidewalks, pedestrian signals, street crossings, roundabouts, and shared-use paths. FHWA has adopted these guidelines as best practices for all federally-funded projects.
The FP-14 Standard Specifications apply to construction on Federal Lands highways administered by FHWA Federal Lands Highway divisions. It provides the base specification language used for projects in national parks, forests, Indian reservations, and other federal lands.
Web✓ Read here — 164 sectionsBuildSpec hosts the FP-24 edition in full; this row links FHWA’s FP-14 page.Official Caltrans sourceThe NBIS (23 CFR 650 Subpart C) establishes the national standards for bridge inspection procedures, frequency, qualifications of inspectors, and reporting requirements. All highway bridges on public roads must be inspected in accordance with these federal standards.
The federal reference for highway-rail grade crossing safety: crossing inventory, traffic control device selection, sight distance, active and passive warning systems, quiet zones, and crossing closure and consolidation programs.
The federal construction safety standard governing every highway project: excavation and trenching, fall protection, scaffolding, cranes and rigging, confined spaces, and work-zone traffic hazards.
Working on a federal-aid project in California?
Federal standards apply on top of the Caltrans book: the MUTCD for traffic control devices, ADA and PROWAG for accessibility in the public right-of-way, and FHWA FP-24 in place of a state book on Federal Lands work. Compare California against other states in the all-50-state index.