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Idaho Falls, Ammon and Bonneville County outline summer road, bridge and fiber projects
Summary
City and county officials presented coordinated plans for arterial reconstructions, bridges, seal-coating more than 51 miles of roads, fiber upgrades to traffic signals, and a multi-phase First Street five-lane project; officials gave timelines for bids and construction and invited public feedback.
City and county officials on Tuesday summarized a slate of coordinated road, bridge, sidewalk, lighting and fiber projects intended to reduce congestion and repair aging infrastructure across Bonneville County.
Chris Canfield, introduced in the meeting as acting public works director for the City of Idaho Falls, led the first presentation and demonstrated an online map that lists projects as “under construction,” “under contract” and “planned.” Canfield highlighted recently completed work including the 65th North Bridge over the Idaho Canal and last year’s pavement overlays, and said the city’s arterial program includes E Street paving, multiple seal-coat and micro-surfacing corridors, and the Boulevard–Birch Street roundabout, a reconstruction project planned to begin after the Fourth of July and expected to take three to four months.
"We all have worked to put maps together that are available online," Canfield said, pointing attendees to files and timeline details on the city’s project pages. He described contract provisions intended to limit disruptions (for example, scheduling initial seal-coat work on Sundays and brooming/fog coating before re-striping).
Micah Austin, identified as the city administrator for Ammon, showed Ammon’s project map and outlined six street projects, three fiber projects, one park project and three water or sewer projects. Austin said Ammon will replace the McCowin Park playground (targeted for summer 2026), complete a citywide chip-seal program that will affect many neighborhoods and extend a fiber trunk from 12 to 144 strands to expand network capacity.
"This playground desperately needs it," Austin said of McCowin Park, and he warned residents the chip-seal work will cause temporary impacts while crews sweep loose chips and restore surfaces.
Austin described a safety-focused redesign at 49th and Ammon that will underground a canal alignment and prepare the intersection for a future traffic signal, and he reviewed a joint First Street project the city is designing with the county that will widen the corridor to five lanes; the city plans to bid the First Street package this year with construction expected to begin next spring.
A Bonneville County official (unnamed in the transcript) closed the presentations with county updates including repair of a slide on Bear Creek Road (Swan Valley), the Stoltenberg Lane reconstruction, and multiple bridge replacements completed with grant money from the Leading Idaho Local Bridges Program. The county speaker said the Road and Bridge Department normally operates on roughly a $25 million annual budget and gave project cost estimates: roughly $25 million for a recent three-mile stretch on 45th East, $8 million for the Iona Road reconstruction, and roughly $13.5 million for a one-mile reconstruction of 49th North that the county said is being funded by the county together with three developers, the Iona-Bonneville Sewer District and Falls Water to serve a new Willow Creek Elementary school.
County staff also listed upcoming bridge projects (Sand Creek and Willow Creek bridges, each near $3 million, and a Fifth West bridge estimated at $4 million) and said the First Street corridor work from Ammon Road to 45th East will be advanced with BMPO grant support. The county reported it has more than 51 miles of chip seal and crack-seal work scheduled for 2026.
Attendees asked questions during a public Q&A about recent bridge openings, roundabout duration, and how developer-driven frontage work differs from city or county projects. Officials repeatedly urged residents to consult the interactive maps and file review links for project extents and schedules and to provide feedback so agencies can better coordinate closures and mitigation.
Next steps noted at the meeting: select signal and intersection projects are scheduled for bid (several referenced a June 2 bid milestone), the Ammon/County First Street design is on track to be bid this year with construction anticipated next spring, and other BMPO-programmed signal work is forecast in the early 2030s. Officials encouraged residents to consult the public project maps for specifics and contact agency staff with questions.
