US Bridges

County Road 17 over Lay Creek

Fair

Moffat County, Colorado · 9.9 MI North of US HWY 40 · Structure no. MOF17-29.00-A

Built
1955
70 years old, rebuilt 1990
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
31
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 17 over Lay Creek is a steel stringer/multi-beam or girder carrying County Road 17 over Lay Creek in Moffat County, Colorado. It was built in 1955 and reconstructed in 1990, so it is 70 years old, older 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 31 vehicles a day, roughly 43% of them trucks, projected to reach 37 by 2042. The structure is 30 ft (9.2 m) long and 24 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

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CarriesCounty Road 17
CrossesLay Creek
Location9.9 MI North of US HWY 40
RouteCounty Highway 0
CountyMoffat County
StateColorado
Coordinates40.64457, -107.81449
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
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 alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating26.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length30 ft (9.2 m)
Longest span29 ft (8.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31 (2023)
Projected traffic37 by 2042
Trucks43%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 17 over Lay Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1990.

What condition is County Road 17 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 17 over Lay Creek carry?

About 31 vehicles per day (2023 count), of which roughly 43% are trucks.

How long is County Road 17 over Lay Creek?

The structure is 30 ft (9.2 m) long with a longest span of 29 ft (8.7 m) and a deck 24 ft wide.

Who owns County Road 17 over Lay Creek?

It is owned by the County Highway Agency.