Head east out of Copperopolis on State Route 4 and the first few miles past Bonanza Mine Way feel like a different road than they did two years ago. The lanes are wider and the pavement is new. Many of the tight curves that used to slow traffic have been taken out. Caltrans and Calaveras County announced in November 2025 that they had finished phase 1 of the SR-4 Wagon Trail Realignment Project. Caltrans says travelers between Angels Camp and Copperopolis "will now experience a smoother ride with fewer curves."
Keep driving toward Angels Camp, though, and the old road comes back. Narrow lanes, little shoulder, and hills that hide what's coming. The work started at the Copperopolis end. The last miles before the Highway 49 junction are the ones still waiting, and their timeline has moved back.
The corridor in three pieces
People call it "the Wagon Trail project," but the drive is really three separate jobs, each on its own schedule. Here is the stretch between Copperopolis and Angels Camp, west to east.
| Stretch | Who's leading it | Where it stands as of October 2026 |
|---|---|---|
| Phase 1: Bonanza Mine Way to Appaloosa Road, about 3.2 miles | Calaveras County Public Works, with Caltrans and CCOG | Completed; Caltrans announced it in November 2025 |
| West Branch Cherokee Creek Bridge, just east of Appaloosa Road | Caltrans | Scheduled to finish in Summer 2024; we haven't found a published completion notice |
| Eastern Segment: Stallion Way to about 1.6 miles west of the SR-4/49 junction near Stockton Road, about 3 miles | Caltrans, with county coordination | In design and right-of-way; completion targeted for Summer 2030 |
That table explains the drive. The finished section is the one closest to Copperopolis. The section that hasn't started is the one closest to Angels Camp, so on any trip to Angels Camp you drive the new road first and then finish on the old one.
What phase 1 actually changed
Phase 1 covered 3.2 miles from Bonanza Mine Way to Appaloosa Road. Crews widened, graded and paved the road, took out curves, and added culverts and animal crossings. Caltrans put phase 1 funding at $52 million from federal, state and local sources, including nearly $6 million from Senate Bill 1, the state's 2017 road repair law.
The project site's August 2025 update describes the final stretch of work at the Pool Station Road and Appaloosa Road intersections and at Nassau Creek. Traffic was shifted temporarily during that work, and Pool Station Road stayed open. The same update says traffic at Pool Station Road had moved onto its permanent alignment. If you drive this route often, those are the two intersections where the road looks most different from before.
A November 2023 fact sheet for the project gives the reason behind all this work. It says the corridor had an accident rate twice the state average.
The bridge over Nassau Creek that's named after Cherokee Creek
Just east of Appaloosa Road is a short piece of highway with a separate Caltrans project and a confusing name. Caltrans calls it the West Branch Cherokee Creek Bridge Replacement, project 10-1H500, at SR-4 post mile 16.15. Caltrans's own environmental study says the bridge is misnamed. The creek it crosses is Nassau Creek, and Cherokee Creek is about a mile away.
That explains a mix-up you may have run into. Some local coverage says "Cherokee Creek bridge," and the phase 1 updates say "Nassau Creek." Both refer to the same crossing. In June 2021 the Calaveras Enterprise described the Cherokee Creek bridge replacement as sitting just east of Appaloosa Road, with construction expected to start in 2023.
The design in Caltrans's study replaces the old bridge with a 31-foot span and raises it four feet. That lets the channel carry 1,800 cubic feet per second instead of 800. The design keeps 12-foot lanes and adds 8-foot shoulders and guardrail that meets current standards. Caltrans's project page lists Summer 2024 as the planned completion. The same page still lists the project as current, and its status text describes a construction start from late 2022. We haven't found a published notice of actual completion, so we won't give a finish date here. Those design numbers come from planning documents and may differ from what was built.
The last three miles, and how their schedule changed
From Stallion Way east, the road hasn't changed. The Calaveras Council of Governments describes it as narrow, nonstandard lanes with little or no shoulder. It says the road follows the rolling ground, with frequent curves, changes in elevation and limited sight distance. The Eastern Segment would replace about 3 miles of it with a new alignment that ends about 1.6 miles west of the SR-4/49 junction near Stockton Road.
The schedule for this stretch has moved more than once. Here is how three published versions compare:
- November 2023 fact sheet. Design and right-of-way finished by summer 2026, and construction "could begin in 2027."
- myMotherLode, April 9, 2026. Citing the current schedule, the outlet reported design completion by June 2027 and a construction start in 2028.
- Caltrans project page, now. Right-of-way certification in Summer 2028, construction contract approval in Fall 2028, and completion in Summer 2030.
That pushes the expected start of construction back about a year and a half. From today, October 2026, the finish target is almost four years away. If you were counting on driving a new road to Angels Camp in 2027, the current target for a finished road is the summer of 2030.
Work on this stretch so far is mostly planning and land. Caltrans's page says the survey is done, the design team is finalizing the alignment, and right-of-way appraisals were expected to start in June 2026. At its May 14 and 15, 2026 meeting, the California Transportation Commission received a staff recommendation to allocate $6.292 million for the segment's right-of-way. That's $5.042 million for property and $1.25 million for support work. The same memo asked for a 12-month extension on the deadline to spend the money. A recommendation isn't a vote, and the memo doesn't record what the Commission decided.
The same memo is the most detailed public description of what drivers would get. It lists seven turn pockets, five corrections to curves and hills, and 6.42 miles each of new lanes and shoulders. It doesn't say where the turn pockets will go. None of the documents we reviewed say what will happen to the existing road, how the Stockton Road end will be designed, or whether a roundabout is planned. Caltrans presented the project at a public meeting at Bret Harte High School on April 9, 2026. We haven't found a published account of the questions people asked there.
On cost, Caltrans's programmed amounts for construction are $2.958 million in capital and $8.324 million in support. Its projected-cost table as of June 2026, though, lists construction as "TBD." So far it has spent about $706,000 of a $4.5 million design budget. CCOG says design money came from a regional program the CTC approved in August 2022. Right-of-way is funded by a $5.25 million SB 1 trade-corridor grant, with the local match coming from the county's RIM Fund. Until there's a projected construction cost, the fall 2028 contract date rests on a figure that isn't set yet.
What that means for a drive this fall
We haven't found a Caltrans notice of construction on this stretch this fall. Caltrans's most recent Calaveras County traffic advisory, from September 4, 2026, covered overnight drainage work on SR-4 between Brice Station Road and Northwood Drive. That's farther up the highway, not between Copperopolis and Angels Camp. Caltrans recommends checking quickmap.dot.ca.gov before you leave.
Closer to home, the Calaveras County Water District has had crews on Little John Road. Its Copper Cove C-Tank transmission project lays about 12,000 feet of 20-inch pipe, mostly under the existing Little John Road pavement. CCWD put Mozingo Construction's contract at about $8.26 million. myMotherLode reported phased closures on Little John and Charmstone from December 8, 2025 through March 13, 2026. A contractor schedule dated May 14, 2026 listed paving closures between Kiva and Flint Trail, Flint Trail and North Bow, and Charmstone and C-Tank. CCWD hasn't posted a completion notice that we've found, so its project page is the place to check for current closures.
For now, the drive looks like this. Leaving Copperopolis, the first several miles are the rebuilt phase 1 road. Then comes the Nassau Creek crossing, the bridge named after Cherokee Creek. From Stallion Way to near Stockton Road, the road is the same one drivers have used for decades. Its current Caltrans completion target is Summer 2030.
Elly Bermudez is based in Copperopolis and follows the Highway 4 schedule as it changes. If you'd like to talk through how the timeline affects your trips to Angels Camp, or a property along the route, in English or Spanish, Let's Connect.
