US Bridges

County Road 74 over Lay Creek

Fair

Moffat County, Colorado · 0.28 MI East of US HWY 40 · Structure no. MOF74-00.28-A

Built
1990
35 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
82
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 74 over Lay Creek is a steel stringer/multi-beam or girder carrying County Road 74 over Lay Creek in Moffat County, Colorado. It was built in 1990, so it is 35 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 82 vehicles a day, roughly 78% of them trucks, projected to reach 96 by 2042. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCounty Road 74
CrossesLay Creek
Location0.28 MI East of US HWY 40
RouteCounty Highway 0
Coordinates40.5002, -108.01297
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating32.3 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span31 ft (9.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2023)
Projected traffic96 by 2042
Trucks78%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 74 over Lay Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is County Road 74 over Lay Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does County Road 74 over Lay Creek carry?

About 82 vehicles per day (2023 count), of which roughly 78% are trucks.

How long is County Road 74 over Lay Creek?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.3 m) and a deck 24 ft wide.

Who owns County Road 74 over Lay Creek?

It is owned by the County Highway Agency.