Greenfield Bridge | Bedfordroads 2/5

Greenfield Parkway Bridge Project

Bridge is CLOSED to all uses until further notice. Bridge failed on Friday 1/26/2024. Preliminary investigations are complete and repair plans are being prepared.

State Aid Bridge (SAB) Project Design Schedule

*the following dates are our best estimates and are subject to change*

Project Name: Bedford

Project Number: 21684

Project Description: Greenfield Parkway over Riddle Brook, Bridge No. 157/068, SAB Project: Bridge Replacement

Funding Source: SAB

Project Manager: Brian Desfosses, PE

Target Dates (Subject to change)

Start Engineering Study - 4/26/2024
Approve Engineering Study - 9/3/2024
Approve Preliminary Design - 9/27/2024
Begin Final Design and Right-of-Way (ROW) Acquisition Process - 10/11/2024
Complete National Environmental Policy Act (NEPA) Process - 10/30/2024
Receive Notice to Proceed to Advertise Project from NHDOT - 12/11/2024
Advertising Date - 12/11/2024
March Ballot for bid award - March 2025
Construction Completion - November 2025

Click HERE to view the latest DPW report related to this project.

Click HERE to view the final Geotechnical Engineering Report.

Task	Total Hours
Engineering Study Phase 1
Evaluate Drainage Area	6
Wetland Delineation and Classification	0
Stream Crossing Assessment	16
Field Survey, ROW, & Base Plan Development	51
Bridge, Channel, and Site Inspection	8
Develop Design Criteria	10
Develop Roadway Improvement Alternatives	27
Develop Replacement Bridge Alternatives	40
Develop Riverine Hydrologic Study	32
Prepare Hydraulic Study for Bridge	80
Develop Scour Studies for Bridge	40
Develop Study Plans	25
Develop Cost Estimate	36
Develop Engineering Report	90
Project Meetings (Assume 3)	4
Geotechnical Investigation	34
Cultural Resource Review	20
Preliminary Plan Phase
Prepare Preliminary Plans
- Preliminary Bridge Design and Plan Development	118
- Preliminary Roadway Design and Plan Development	48
- Preliminary Cost Estimate	35
Develop Wetland Impact Plans	33
Environmental Permitting
- NHDOT Non-Federal Environmental Review Short Form	81
- NH Fish & Game Department Consultation	28
- NHDES Wetlands Permit	102
- USACE Section 404 General Permit	10
Develop Cost Estimate	40
ROW and Easements	32
Project Meetings (Assume 2)	12
Final Plan Phase
Prepare Final P S & E Plans
- Final Bridge Design and Plan Development	374
- Final Roadway Design and Plan Development	62
Finalize ROW & Easements	0
Utility Coordination	16
Develop Cost Estimate	35
Prepare Contract Proposal & Specifications	74
Project Meetings (Assume 1)	4
Bid Phase Services
Bid Assistance
- Develop Construction Bid Advertisement	2
- Prepare Bid Addenda as Necessary	16
- Conduct a Pre-Bid Meeting	9
- Attend Bid Opening	3
- Review and Summarize Bids; Prepare Recommendation Letter	38
- Contract Administration Services	10
TOTAL	1701