Begin Nepa Process (FHWA concurrence required for steps 1-3.)

Step 1. Issue request for proposalss
Step 2. Enter into design-build contract
Step 3. Prepare preliminary design

STOP until NEPA process is complete. FHWA approval required.

Do NEPA results require modification of preliminary design? If yes, revise preliminary as necessary.

If no, complete final design and construction. (FHWA approval required.)