US Bridges

County Road 17 over Lay Creek

Fair

Moffat County, Colorado · 0.5 MI South of US HWY 40 · Structure no. MOF17-19.10

Built
1960
65 years old, rebuilt 1980
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
36 ft
2 main spans
Daily traffic
60
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 17 over Lay Creek is a steel continuous stringer/multi-beam or girder carrying County Road 17 over Lay Creek in Moffat County, Colorado. It was built in 1960 and reconstructed in 1980, so it is 65 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 5 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 60 vehicles a day, roughly 31% of them trucks, projected to reach 70 by 2042. The structure is 36 ft (11.1 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty Road 17
CrossesLay Creek
Location0.5 MI South of US HWY 40
RouteCounty Highway 0
CountyMoffat County
StateColorado
Coordinates40.52056, -107.88219
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.4 US tons
Inventory rating23.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckCorrugated steel
Main spans2
Design loadUnknown
Structure length36 ft (11.1 m)
Longest span17 ft (5.1 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2023)
Projected traffic70 by 2042
Trucks31%
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 17 over Lay Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1980.

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

How long is County Road 17 over Lay Creek?

The structure is 36 ft (11.1 m) long with a longest span of 17 ft (5.1 m) and a deck 30 ft wide.

Who owns County Road 17 over Lay Creek?

It is owned by the County Highway Agency.