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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

  • Start Engineering Study - 4/26/2024

  • Approve Engineering Study - 7/12/2024

  • Approve Preliminary Design - 8/12/2024

  • Begin Final Design and Right-of-Way (ROW) Acquisition Process - 8/13/2024

  • Complete National Environmental Policy Act (NEPA) Process - 8/30/2024

  • Receive Notice to Proceed to Advertise Project from NHDOT - 10/11/2024

  • Advertising Date - 10/15/2024

  • March Ballot for bid award - March 2025

  • Construction Completion - November 2025

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

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

Photo Gallery

Greenfield Parkway Bridge 1_edited

Bridge Closure

Greenfield Parkway Bridge 2

Collapsed Pavement

Greenfield Parkway Bridge 3

Further Collapsing of Pavement

Greenfield Parkway Bridge 5

Drone Shot of Detached Metal Arch

Greenfield Parkway Bridge 4

View of Detached Metal Arch

Greenfield Parkway Bridge 6

Close Up Drone Shot of Collapsed Metal Arch

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