If you walk south on 8th Street from Bannock this week, you pass through two construction seasons in two blocks. The block between Bannock and Idaho is still fenced down the middle. Sidewalks stay open on both sides so every door can be reached. Cross Idaho Street, where traffic is running on shifted lanes, and the block down to Main is finished and open. The city reopened it on October 1 with live music, face painting, a caricature artist and a roaming magician.
Downtown's restaurant row spent its warmest months under construction because the geothermal pipes beneath the street can only be replaced while downtown's buildings don't need heat. That schedule also pushed the two blocks' businesses into something new: a shared identity, Boise on 8th, with its own field guide and a stamp raffle running while half the street is still fenced.
The pipes under the pavement set the calendar
The City of Boise's 8th Street project page gives the reason construction started in May. Geothermal water heats downtown buildings in the colder months, and the lines can only be replaced while that utility is not in use. That fixed the order of work. The city scheduled the block from Main to Idaho for May through September 2026 and the block from Idaho to Bannock for September through November 2026.
The work goes back further than this year. In 2020 the city closed these two city-owned blocks to cars as a pandemic pilot so restaurants could expand their patios. A 2022 report recommended improvements that would keep the street car-free. Phase 1 finished in spring 2024 with permanent ADA-compliant crossings and tactile wayfinding strips, and Phase 2 is the rebuild happening now.
The geothermal system also changed the scope of the job partway through. BoiseDev reported in September that during construction, once crews had exposed and evaluated existing conditions, the city saw a chance to upgrade building connections to geothermal service. Doing that work while the ground was open extended the south block's timeline, and the city's reasoning was that it would avoid bigger disruption later.
The south block's three extra weeks
BoiseDev put the cost of this phase at $2.2 million, with Guho Construction as contractor. The block from Main to Idaho was due to reopen September 4. In the week of that article, crews were tearing out sections of freshly poured concrete instead. City spokesperson Maria Ortega explained the decision to the outlet:
"The city's project team and our contractor determined that certain sections of the newly placed concrete did not meet the project's quality standards. To ensure the long-term integrity of the concrete, we decided to remove and replace the affected areas."
Unforeseen underground utility conflicts also forced minor design changes. Combined with the geothermal upgrades and the concrete replacement, those issues moved the reopening target to September 25. Ortega told BoiseDev that Guho added crews to make up time and that the changes would not cost the city extra.
KIVI reported in mid-September that a manager at Cotopaxi said construction noise and light downtown traffic were keeping customers away, and that she hoped the finished project would be worth the wait. The block was open in time for the October 1 First Thursday celebration, which the City of Boise, the Downtown Boise Association and downtown businesses hosted together.
What the design called for
When the city unveiled the Phase 2 design, BoiseDev's December 2024 report described these features:
- No curbs. One flat surface from storefront to storefront, so no ramps are needed.
- A dedicated through-path. A strip on one side, marked with a textured wayfinding surface, for people walking straight through instead of stopping.
- Movable furniture and trees. Tables and chairs like those at Cherie Buckner-Webb Park, plus trees in secure but movable planters, so the street can be cleared for events.
- String lights overhead, with permanent bike parking and street lamps near the intersections.
- Wayfinding signs at the block ends, replacing the A-frame signs that used to sit in the middle of the street.
- Slightly smaller patios. They still give businesses more space than before COVID-19, with more of the block returned to the public.
- A park-like seating area with added trees in the middle of the Main-to-Idaho block, at the base of the Main + Marketplace escalator.
City officials have described the finished block in broad terms: better accessibility, more room for pedestrians, and flexible public space for events. The list above is the design as planned. The reopened block is the best way to see how much of it was built. Mayor Lauren McLean told KTVB that the improvements create "a more welcoming street where people of all ages and abilities can stroll, roll and gather."
The north block, stage by stage
The city's schedule for the block from Idaho to Bannock runs in two stages. For anyone heading there after work, what changes between them is the side streets, not 8th Street itself.
| Stage | Window | 8th St., Idaho to Bannock | Side streets |
|---|---|---|---|
| Six | Mid-October to late October | Street closed; sidewalks open on both sides for business access | Bannock closed from Capitol Blvd. to 9th; alley from Capitol to 9th closed; no access to Jefferson from 8th; Idaho St. lane shifts |
| Seven | Late October to late November | Street closed; sidewalks open on both sides for business access | Idaho St. lane shifts |
This post goes up close to the handoff between the two stages. The Bannock closure and the alley closure belong to Stage Six, so getting to the north end of 8th by car should get easier once Stage Seven begins. The pedestrian rules stay the same throughout. The city asks people on bikes and scooters to dismount on the sidewalks or use the posted detour route. It also says bikes locked to the construction fence may be removed, and it explains how to retrieve an impounded bike.
The city also says schedules may shift as work goes on. The south block's own timeline slipped this summer, so treat "late November" as a target and check the project page before planning an evening around the north block.
Nineteen businesses, one field guide
While the south block reopened and the north block was being dug up, the businesses along the corridor launched the Boise on 8th Field Guide, which KTVB described as a new promotion created by businesses along the pedestrian corridor. Here's how it works: collect stamps from 15 participating businesses, then enter a prize raffle through the form on boiseon8th.com. The site still lists prize details as "coming soon."
The guide lists these businesses:
- Dining: Rustica, Funky Taco, The STIL, Prost, Diablo & Sons, Just Eat Local, Stella's Ice Cream, Red Feather Lounge, Bittercreek Alehouse, Terroir, Pie Hole, Little Pearl Oyster Bar, Fork
- Drinking: The Mode Lounge, Dawson Taylor, 8 Horses Lounge
- Shopping: Cotopaxi, Title Nine
- Wellness: Torque Body Shop
To get oriented, the Downtown Boise Association lists Fork at 199 N. 8th St., Pie Hole at 205 N. 8th St., and Diablo & Sons Saloon and Bittercreek Alehouse at 246 N. 8th St. Since the north block's sidewalks stay open during both stages, every stop on the list can be reached on foot this fall, including the ones behind the fencing.
Dave Krick, a partner at Just Eat Local, told KTVB that "the best part has been how it brought the partners together, the business owners and all the key people building 8th into a living street for everyone." Two blocks that used to be a handful of separate patios now present themselves as one place. And they made that move during the months the north block's patios were behind a fence.
Two First Thursdays left in 2026
The Downtown Boise Association lists First Thursday for November 5 and December 3, 2026, from 5 to 9 p.m. both nights. The program has been sending people downtown for more than 30 years, and for October, Executive Director Lauren Hamilton told KTVB that the association encouraged people to "add a stop on the newly completed 8th Street block" to their itinerary.
November 5 lands during Stage Seven. The south block will be fully open, and the north block's storefronts will be reachable by their sidewalks, with Idaho Street still on shifted lanes. That makes it a good night to collect several field guide stamps in one loop. December 3 comes after the city's late-November target for the north block. If that target holds, the first December First Thursday will be the first one with both rebuilt blocks open end to end since construction started in May.
Have a favorite stop on 8th Street, or are you curious how projects like this change the blocks around them? I'm always glad to talk about downtown with people who spend their evenings there. Reach out to Glenda Phua. Let's Connect.
