Site work for a bridge / tunnel in Ann Arbor, Michigan. Completed plans call for site work for a bridge / tunnel.

Please review the ITB Document and Plans for further details and provide the Required Forms outlined within the Bid with bids at the time of bid opening. Question Acceptance Deadline 08/26/2021 10:00 AM EDT Questions are submitted online No The City may make changes to the quantities of work within the general scope of the Contract at any time by a written order and without notice to the sureties. If the changes add to or deduct from the extent of the work, the Contract Sum shall be adjusted accordingly. All the changes shall be executed under the conditions of the original Contract except that any claim for extension of time caused by the change shall be adjusted at the time of ordering the change. The scope of this project includes the removal and replacement of the existing culverts underneath Nichols Drive in the Arboretum with one 8-foot-wide by 3-foot-high concrete box culvert with new headwall and wingwalls, rebuilding the existing aggregate roadways, and regrading and stabilizing the channel upstream and downstream of the culvert including three plunge pools, a cascading rock channel with weir grade control, and a fieldstone spillway. The limits of the project fall within the Nichols Arboretum (Arboretum). The Arboretum is jointly owned by the City of Ann Arbor and the University of Michigan. The Arboretum is comprised of various natural features, including botanical areas, significant trees and plants, steep slopes, as well as regulated wetlands. Contractor shall be sensitive to the environment, the patrons of the Arboretum, and the individual requirements of all property owners.