Council awards contracts for Northwest 100th Street road and trail improvements

Johnston City Council on Monday approved plans and awarded a construction contract for improvements along Northwest 100th Street and a new 10-foot concrete trail connecting NW 70th/78th Avenue to the Grimes Trail, voting to adopt resolutions 25-80 and 25-81.

The work covers a section running from NW 70th up to 80 Second (the Crosshaven terminus) and includes a trail connection that runs from NW 70th over to 70 Eighth to join the Grimes Trail. Council opened the public hearing, heard staff recommendations and approved the project and contract award.

Why it matters: the project will add a separated 10-foot concrete trail where sidewalks or trails do not currently exist and will reconstruct the roadway, improving pedestrian connectivity and vehicular pavement structure in the Crosshaven/NW 100th corridor.

Public works staff told the council the city received two bids on March 11. Staff reported the engineer—s opinion of probable cost was about $5.78 million; the certified low bid was about $4.595 million, roughly 25% under the estimate. Matt, a public works staff member, said INROADS was the low bidder and highlighted that INROADS —really sharpened their pencil— on major pay items including paving, site work and earthwork. Matt also said the city has worked with INROADS on a smaller widening project at 100th and Windsor six to seven years ago.

City staff described the roadway work as a full-depth reclamation: crews will grind off the existing asphalt, till a portion of the asphalt into the cement-stabilized binder to stabilize the base, and then place a 6-inch asphalt pavement in three separate lifts. The trail will be 10 feet wide and constructed of concrete; the primary contractor is expected to subcontract the concrete work.

Council voted to adopt Resolution 25-80 (plans/specifications/estimate of cost) and Resolution 25-81 (award of construction contract). The motions passed following roll-call votes; Council member Burkhart, Council member Evans and others recorded affirmative votes during the roll calls and the mayor declared the motions passed.

City staff said a pre-construction meeting has not yet occurred and that construction scheduling and contractor subcontractor assignments will be determined at that meeting. A calendar invite for related meetings was noted to be sent to council members.

Evidence excerpts from the meeting record show staff presenting the bid comparison and Matt explaining why INROADS was low on key divisions and noting the contractor—s prior work in the area. The council closed the public hearing and approved both resolutions.