US Bridges

County Road 17 over Lay Creek

Fair

Moffat County, Colorado · 4.5 MI North of US HWY 40 · Structure no. MOF17-24.05

Built
1955
70 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
37
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, 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 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 37 vehicles a day, roughly 47% of them trucks, projected to reach 43 by 2042. The structure is 31 ft (9.3 m) long and 25 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

Open in Google Maps
CarriesCounty Road 17
CrossesLay Creek
Location4.5 MI North of US HWY 40
RouteCounty Highway 0
CountyMoffat County
StateColorado
Coordinates40.5942, -107.86212
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length31 ft (9.3 m)
Longest span29 ft (8.7 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37 (2023)
Projected traffic43 by 2042
Trucks47%
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.

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 37 vehicles per day (2023 count), of which roughly 47% are trucks.

How long is County Road 17 over Lay Creek?

The structure is 31 ft (9.3 m) long with a longest span of 29 ft (8.7 m) and a deck 25 ft wide.

Who owns County Road 17 over Lay Creek?

It is owned by the County Highway Agency.