Mallard Avenue Bridge #1339

The Ada County Highway District (ACHD) is procuring a comprehensive infrastructure project for the Mallard Avenue Bridge #1339, located in Boise, Idaho. The project involves replacing two existing corrugated metal pipes with a precast stiff leg bridge, including extensive roadway improvements such as asphalt resurfacing, dewatering, cast-in-place concrete construction, curb and gutter installation, sidewalk construction on both street sides, valley gutter implementation, pedestrian ramps, and pedestrian railing installation. Contractors must possess a Type 1, 2, or 4 Public Works Contractor License and are required to register on ACHD's eProcurement portal to submit electronic documentation. Bids will be electronically received until 3:00 pm on Wednesday, April 19, 2023, with a planned Notice to Proceed around August 1, 2023, and project completion expected by December 8, 2023. The project requires a bid bond representing 10% of the total proposal amount, with liquidated damages of $2,000 per calendar day of delay. The estimated bonding requirement is $720,000, and the contract will retain 5% of partial payments until final inspection and acceptance.

The contract includes specific requirements for local workforce composition, mandating that contractors employ 95% bona fide Idaho residents as employees, with some exceptions for smaller contracts or federal funding considerations. The project involves multiple utility coordination efforts, including work with Sparklight, Lumen, City of Boise departments, Idaho Power, Intermountain Gas, Veolia, Syringa Networks, and Zayo. Environmental considerations are significant, with the project requiring U.S. Army Corps of Engineers Nationwide Permit and Section 401 Water Quality Certification from the Idaho Department of Environmental Quality. The project site is located within a regulatory floodplain (AE zone) and requires compliance with local, state, and federal floodplain regulations. While the exact contract amount is to be determined through the bidding process, the comprehensive nature of the project, including bridge replacement, roadway reconstruction, and utility coordination, suggests a substantial infrastructure investment. The project is situated on ancestral lands of the Shoshone, Bannock, and Northern Paiute peoples and involves right-of-way acquisitions from multiple property owners, including Mallard Property LLC, City of Boise, and several other local entities.