US Bridges

US 40 Ml over Crooked Creek

Poor

Grand County, Colorado · W. Edge of Tabernash · Structure no. E-13-F

Built
1941
84 years old, rebuilt 1970
Condition
Poor
inspected October 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
11,000
2020 count
Owner
State
State Highway Agency

About this bridge

US 40 Ml over Crooked Creek is a concrete culvert carrying US 40 Ml over Crooked Creek in Grand County, Colorado. It was built in 1941 and reconstructed in 1970, so it is 84 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 11,000 vehicles a day, roughly 5% of them trucks, projected to reach 12,980 by 2040. The structure is 21 ft (6.4 m) long and 72 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 40 Ml
CrossesCrooked Creek
LocationW. Edge of Tabernash
RouteU.S. Route 40A
Coordinates39.99438, -105.85106
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.6 US tons
Inventory rating40.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width72 ft (21.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2020)
Projected traffic12,980 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 40 Ml over Crooked Creek built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1970.

What condition is US 40 Ml over Crooked Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does US 40 Ml over Crooked Creek carry?

About 11,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is US 40 Ml over Crooked Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 72 ft wide.

Who owns US 40 Ml over Crooked Creek?

It is owned by the State Highway Agency.