New Castle-area drivers will face a major headache starting Thursday evening. The Colorado Department of Transportation (CDOT) just confirmed a complete four-day closure of US Highway 6 at the Elk Creek Bridge, milepoint 105.8, just west of New Castle. The shutdown runs from 5 p.m. Thursday, February 26, to 6 a.m. Monday, March 2, 2026.

The reason is simple but massive: crews will physically slide the existing 67-year-old bridge sideways into a temporary detour position so construction on the permanent new bridge can begin in its place.

Why They’re Moving an Entire Bridge

The Elk Creek Bridge was built in 1958. It has reached the end of its safe service life. CDOT structural engineers rated it “poor” years ago, with corrosion, cracking, and load restrictions looming if nothing is done.

Instead of closing the highway for months or years while building the new bridge, CDOT chose the faster “bridge slide” method. Crews will shift the current structure about 30 feet south onto temporary supports. Traffic will then roll across the old bridge while the brand-new $18.4 million replacement is built right where the old one sat.

This four-day full closure is the critical moment the whole 2026 construction season hinges on.

Exact Closure Times and Detour Route

• Starts: Thursday, February 26, 2026 at 5:00 p.m.
• Ends: Monday, March 2, 2026 at 6:00 a.m.
• Location: US 6 milepoint 105.8, west New Castle at Elk Creek
• Alternate route: I-70 only (add roughly 20-25 minutes each way)
• No pedestrian access across the bridge during closure

CDOT deliberately picked this window because it falls during Garfield Re-2 School District’s winter break. No school buses will be affected at Elk Creek Elementary or Coal Ridge High School.

How the Four-Day Move Will Actually Work

Day 1 – Thursday night: Crews break the existing bridge free from its abutments and install hydraulic jacks and slide tracks.

Day 2 – Friday: The 800-ton steel-and-concrete structure gets pushed sideways at walking speed (about 3-5 feet per minute) until it locks into its temporary home.

Day 3 – Saturday & Sunday: Crews build temporary approaches, install guardrail transitions, and pave smooth connections so traffic can flow again Monday morning.

Day 4 – Sunday night into Monday 6 a.m.: Final safety checks and line striping before reopening.

If weather cooperates, CDOT says the old bridge will carry traffic again by Monday morning rush hour. If high winds or snow hit, the opening could slip a few hours.

Bigger Picture: A Safer, Wider Bridge by Thanksgiving 2026

The full Elk Creek Bridge Replacement Project broke ground in January 2026 and is scheduled to wrap up in November 2026.

What drivers will get:

• Two 12-foot lanes plus 8-foot shoulders (up from current narrow 10-foot lanes with almost no shoulder)
• Full 75-mph design speed instead of today’s 55-mph advisory
• New railings, better drainage, and a 100-year design life
• Improved sight distance at the curve just west of the bridge

Total cost: $18.4 million, paid through SB 267 and federal funds.

Prime contractor United Companies, based in Grand Junction, is handling the work, with Lawrence Construction and Vastco also on site.

Local Impact and Business Reaction

Business owners along the west New Castle strip say they’re bracing for four quiet days.

“It’s going to hurt,” said Sarah Martinez, owner of Elk Creek Café. “But we know it has to happen. A safer bridge brings more traffic long-term, not less.”

Garfield County commissioners praised CDOT for picking the least painful weekend and keeping the detour on I-70 instead of pushing everything through Silt or Rifle.

The slide method will keep US 6 open to local traffic for almost the entire 2026 construction season, only requiring occasional night flagging for beam setting and deck pours.

When the new bridge opens in November 2026, drivers will barely notice lane restrictions again.

For now, mark your calendar and plan to take I-70 if you’re heading to Glenwood Springs, Parachute, or Grand Junction that weekend. Four days of inconvenience now means decades of safer travel later.

What do you think, worth the hassle for a brand-new bridge? Drop your thoughts in the comments below.