Njdot Standard Drawings [ Pro • 2026 ]

The Importance of NJDOT Standard Drawings in Construction Projects

1. R-101 Series – Typical Roadway Sections: Defines pavement layers (HMA thickness, subbase, aggregate base) for various roadway classifications.
2. D-201 – Type B Inlet (Curb Inlet): The standard drainage box along curbed roadways. There is almost no curbed project that doesn’t use it.
3. D-303 – Pipe Bedding and Backfill: Specifies the bedding angles (Class I, II, or III) for reinforced concrete pipe (RCP) and corrugated metal pipe (CMP).
4. C-401 – Vertical Curb and Gutter: Details the dimensions, rebar placement, and joint spacing for standard NJDOT curb.
5. E-501 – Silt Fence Details: Mandatory for any land disturbance. Includes the trenching and wire backing requirements, which are commonly violated on site.
6. T-708 – Breakaway Sign Supports (Wood and Steel): Critical for safety. Specifies the slip-base and breakaway couplings for roadside signs.
7. G-901 – Guiderail System (Blocked-out W-Beam): The standard weak-post and strong-post guiderail configurations.
8. G-915 – Bridge Railing Transition: Details how to safely transition from a concrete bridge railing to a W-beam guiderail.
9. M-1001 – Standard Manhole (Type A, B, C): Defines the cone section, step rungs (now often omitted for safety), and cover specifications.
10. TD-1101 – Temporary Traffic Control Zone Layouts: The go-to sheets for lane closures and detour sign spacing.

NJDOT provides these resources digitally in several formats, typically via their official Engineering webpage: njdot standard drawings

Common Mistakes Contractors Make with NJDOT Standard Drawings

Even experienced crews make errors. Avoid these top pitfalls: The Importance of NJDOT Standard Drawings in Construction