I35 Forest Lake UBOL and Bridges
SP 8280-47, Letting June 2, 2017
Project purpose, benefits
Pavement rehabilitation, bridge replacement, and interchange improvement. Project limits are I35W from 0.1 mile south of CSAH 54 to North junction I35E, I35E from 0.6 mile north of CR 140 (80th Street) to north junction I35W, I35 from north junction I35W/I35E to Washington/Chisago County line at 240th Street North in the Cities of Lino Lakes, Columbus, and Forest Lake.
The project scope is to install an unbonded concrete overlay (UBOL) within entire project limits with the exception of full pavement reconstruction on the I35W segment to lower freeway to gain vertical clearance under the CSAH 54 Bridge #2801 . Replace Br. # 2804 northbound I35W over southbound I35E with new Br. # 2826, replace Br. #2806 TH 97 over I35 with new Br. # 2818, and replace Br. # 82815 westbound TH 8 over I35 with new Br. # 82871. New bridge at TH 97 interchange must accommodate a future Diverging Diamond Interchange (DDI), but current interchange will remain a regular diamond at the conclusion of this project. There is still some discussion on whether the TH 97 bridge will be 3-lanes wide or 4-lanes wide at the conclusion of this project. Conversion to the future DDI interchange would require possible widening of bridge and installation of concrete medians and sidewalks. Convert the TH 8 interchange to a Trumpet Interchange by installing only the westbound loop ramp on this project, and accommodating the missing I35 southbound exit and northbound entrance ramps for future installation. Replacement of some or all concrete median barrier to accommodate UBOL is a possibility. Perform drainage structure adjustment and repair for all median structures and install new storm water treatment. Approximate Cost is $50 million.
Tentative Procurement Schedule
- Request for Letters of Interest - August 5, 2016 (DOC)
- RFQ (Word) – October 11, 2016
- Shortlisted Teams (Word) - Dec. 12, 2016
- RFP - Feb. 13, 2017
- Technical Proposal Due Date - May 18, 2017
- Letting: June 2, 2017
- Award: July 2017
- Apparent Best-Value (XLSX) June 2, 2017