US Bridges

County Road 124 over Slater Creek

Fair

Moffat County, Colorado · 0.4 MI West of CO RD1 · Structure no. MOF124-00.37

Built
1983
42 years old, rebuilt 2012
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
101
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 124 over Slater Creek is a steel stringer/multi-beam or girder carrying County Road 124 over Slater Creek in Moffat County, Colorado. It was built in 1983 and reconstructed in 2012, so it is 42 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 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 101 vehicles a day, roughly 36% of them trucks, projected to reach 118 by 2042. The structure is 33 ft (10.2 m) long and 16 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesCounty Road 124
CrossesSlater Creek
Location0.4 MI West of CO RD1
RouteCounty Highway 0
CountyMoffat County
StateColorado
Coordinates40.88949, -107.33069
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.8 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length33 ft (10.2 m)
Longest span27 ft (8.1 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101 (2023)
Projected traffic118 by 2042
Trucks36%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 124 over Slater Creek built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2012.

What condition is County Road 124 over Slater 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 124 over Slater Creek carry?

About 101 vehicles per day (2023 count), of which roughly 36% are trucks.

How long is County Road 124 over Slater Creek?

The structure is 33 ft (10.2 m) long with a longest span of 27 ft (8.1 m) and a deck 16 ft wide.

Who owns County Road 124 over Slater Creek?

It is owned by the County Highway Agency.