US Bridges

Wagonwheel Gap RD over Fourmile Creek

Good

Boulder County, Colorado · 200 Ft W of Lee Hill DR · Structure no. BC-WWGAP-0.0-FM

Built
2019
6 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
59 ft
1 main span
Daily traffic
630
2023 count
Owner
County
County Highway Agency

About this bridge

Wagonwheel Gap RD over Fourmile Creek is a prestressed concrete box beam or girders - multiple carrying Wagonwheel Gap RD over Fourmile Creek in Boulder County, Colorado. It was built in 2019, so it is 6 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 630 vehicles a day, roughly 15% of them trucks, projected to reach 756 by 2043. The structure is 59 ft (17.9 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWagonwheel Gap RD
CrossesFourmile Creek
Location200 Ft W of Lee Hill DR
RouteCounty Highway 0
Coordinates40.06472, -105.30156
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length59 ft (17.9 m)
Longest span55 ft (16.7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic630 (2023)
Projected traffic756 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wagonwheel Gap RD over Fourmile Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is Wagonwheel Gap RD over Fourmile Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does Wagonwheel Gap RD over Fourmile Creek carry?

About 630 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Wagonwheel Gap RD over Fourmile Creek?

The structure is 59 ft (17.9 m) long with a longest span of 55 ft (16.7 m) and a deck 27 ft wide.

Who owns Wagonwheel Gap RD over Fourmile Creek?

It is owned by the County Highway Agency.