Engineers & Consultants
Engineers and consultants doing business with the New Hampshire Department of Transportation will find links to business and technical information listed below.
Bridge / Highway Plans, Details, Manuals and Guidelines
- Bridge Design
- Highway Design (Home page)
Completed Plans, GIS Catalog
Consultant Selection
- Consultant Notification Sign-Up
- Consultant Selection Information
- Possible Action Projects
- Projects Soliciting for Interest
- Short List Projects
Environmental
- NPDES Guidelines
- NPDES Notice of Intent Form
- NPDES Notice of Termination
- NEPA Public Involvement Manual - 1/4/2021
Estimate Data and Advertising Information
- Invitation to Bid, Bid Results
- Request for Qualifications/Request for Proposals
- Current Weighted Average Unit Prices (English) (02/2024)
- iPD (Estimate Database) (Contact your NHDOT Project Coordinator for login information)
Permits: Driveway, Environmental, Excavation
Qualified Products & Materials
- Qualified Products Criteria, Guide, Submittal Form, and List of Qualified Products
- Qualified Products List - NEPCOAT Qualified Products List A & B & C - Bridge Paints
Rules/Regulatory/Policy
Standards and Specifications
- CAD/D Documentation
- Standard Plans for Road Construction
- Standard Specifications for Road & Bridge Construction
- Master Item Lists
PDF or Excel
Survey Data
- GPS Base Station Data