Over the Martin Luther King Jr. holiday weekend in January 2023, the Cañada del Oro Wash came over the entrance road at Catalina State Park and stayed there. The park itself got 1.5 inches of rain. The upper Cañada del Oro watershed in the Santa Catalinas got more than 3 inches. When the water receded, more than two feet of sediment sat on the road. According to the Town of Oro Valley's February 2023 report to council, park crews cleared it on January 18, and only then could campers start to leave.
ABC15 reported that the park had been closed since Monday morning. Rangers said this kind of flooding was familiar during monsoon season but uncommon after winter rain.
Construction on the fix was scheduled to begin the week of October 19, 2026. Until about May 2027, every concert, bird walk and star party on the park's winter calendar will be reached by driving through the work zone.
One ford, one way in
The weak point is easy to miss on an ordinary dry morning. About 2,000 feet northeast of the entrance station, the main park road dips across Cañada del Oro Wash on a concrete ford. On a dry day it's a few seconds of pavement, but a running wash over that ford decides whether anyone gets into the park or out of it.
The state's project records describe the problem from the campground's side. Flooding at the crossing blocks campers from entering or leaving the park. The bridge and drainage work are meant to keep access reliable through heavy rain and flash floods.
The ground upstream has also changed. A KVOA report linked stronger, faster runoff and debris flows in the wash to vegetation lost in the 2020 Bighorn Fire. The station said flooding at the crossing has sometimes forced temporary closures or made campers stay longer than planned.
That explains the season. The state's project history says construction was scheduled for early October so the work would miss monsoon season and the channel flooding it brings. The build runs through the cooler months, which are also when the park schedules most of its programs.
What replaces the ford
The new structure is more than a raised section of road. The project's bid documents describe a seven-span, cast-in-place, reinforced-concrete closed-frame slab bridge. The contract also covers rebuilding the road approaches on both sides, regrading the channel, restoring the banks, and removing and stockpiling excess wash material.
| Project detail | What the public record shows |
|---|---|
| Official project name | Catalina State Park Main Entrance Crossing |
| Location | Main entrance road, about 2,000 feet northeast of the entrance station |
| Structure | Seven-span reinforced-concrete slab bridge replacing the concrete ford |
| Funding | Legislative appropriation to State Parks under HB 2858, Section 6 |
| Bid opening | August 14, 2026 |
| Department estimate | $5,211,036 |
| Winning bid | $3,175,119.20, Hunter Contracting Company |
| Contract award | Arizona State Transportation Board, September 18, 2026 |
| Schedule | Week of October 19, 2026, through May 2027 |
Six contractors bid. The bid tabulation shows Hunter Contracting Company's winning bid about $2.04 million under the department's estimate. The other five bids ranged from $3,271,019.07 to $4,161,008.27, so every bid came in well under the estimate. The State Transportation Board's September 18 award list confirms Hunter as the contractor.
Although the work is in a state park, it went through Arizona's highway system. The Arizona Department of Transportation project record handles the bridge like any other construction job in the Tucson District, including a later budget change that moved $69,000 into a separate phase to pay the utility company for relocation work.
The winter calendar runs through the work zone
The park says day use and camping will continue without interruption. It also says to expect construction vehicles, noise and workers on the main road into the park. Arizona State Parks' facility page carries the same notice. KVOA adds posted detours along the main road where the Cañada del Oro crosses.
"All park activities, including day use and camping, will continue without interruption during the construction project. Visitors can expect extra noise and traffic, as well as construction vehicles, workers and posted detours along the main park road where the Cañada del Oro wash crosses."
That's how KVOA summarized the park's press release. The park's own notice asks visitors to watch for updates as work moves along.
The program calendar covers nearly the same months as the construction. The park's guided bird walks run on Sundays, Wednesdays and select Mondays from October 18, 2026, through May 17, 2027. The bridge work is scheduled from the week of October 19 through May 2027.
| Date | Program | Time and place |
|---|---|---|
| Saturday, November 7 | Music in the Mountains: Marana Big PHAT Band, a 20-piece big band playing music from the '60s through the '80s | 3 p.m., Trailhead Stage |
| Saturday, November 21 | Music in the Mountains: Ben Tully, playing music from the '60s and '70s plus his own songs | 3 p.m., Trailhead Stage |
| Friday, December 11 | Star Party | 6 to 8 p.m., Ringtail Group Area |
| Sundays, Wednesdays, select Mondays through May 17, 2027 | Guided Bird Walks | Park calendar |
The concerts sit at the far end of the route. The Trailhead Stage is at the end of the park road, 1.5 miles north of the Ranger Station, and the park tells concertgoers to follow the signs for "Music in the Mountains" and "Trailhead." The series is a bring-your-own-chair event, and the park welcomes food and drinks. On the two November Saturdays, cars heading to a 3 p.m. show will share the main road with the project.
The star party carries a reminder about weather. The park's October 10 Star Party was canceled because of weather, and the December 11 date is listed for the Ringtail Group Area from 6 to 8 p.m. Checking the event page before leaving SaddleBrooke costs less than the drive down Oracle Road.
What the notices say to expect on the drive in
- Construction vehicles and workers on the main park road
- Extra noise and traffic near the Cañada del Oro crossing
- Posted detours along the main road at the wash
- Day use and camping open throughout, per the park
After May
The bridge is meant to remove the park's only all-or-nothing point. In January 2023, heavier rain in the upper Cañada del Oro watershed than in the park itself sent the wash over the entrance road and closed the park until crews cleared the sediment. A seven-span bridge over the same channel is designed to keep that main road open in heavy rain and flash floods. That's the reason the state appropriated money under HB 2858 and the reason construction is timed for the dry months.
For SaddleBrooke households who use Catalina as their nearest state park, a winter or monsoon storm should no longer mean losing the park until the wash drains and crews dig out the road. Until then, the ford is still in the middle of a construction zone. The project is scheduled to finish in May 2027, the same month the park's bird walk season wraps up on May 17.
At Desert Refined, we follow changes like the Cañada del Oro crossing because they shape the drive between SaddleBrooke and the places our clients spend their weekends. If you'd like to talk through what the project means for your own plans this winter, or anything else along the Oracle Road corridor, Let's Connect.
