US Bridges

County Road 143 over Oak Creek

Fair

Fremont County, Colorado · 11.3 MI S of SH 115 · Structure no. FRCO 143-115A

Built
1993
32 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
236
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 143 over Oak Creek is a steel stringer/multi-beam or girder carrying County Road 143 over Oak Creek in Fremont County, Colorado. It was built in 1993, so it is 32 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 236 vehicles a day, roughly 2% of them trucks, projected to reach 265 by 2042. The structure is 65 ft (19.8 m) long and 24 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesCounty Road 143
CrossesOak Creek
Location11.3 MI S of SH 115
RouteCounty Highway 0
CountyFremont County
StateColorado
Coordinates38.30053, -105.25753
Functional classRural Major 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
Deck9 ExcellentNo 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 protection7 GoodSome minor problems.
Last inspectionFebruary 2025
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating65.1 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span60 ft (18.3 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236 (2022)
Projected traffic265 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 143 over Oak Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is County Road 143 over Oak 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 February 2025.

How much traffic does County Road 143 over Oak Creek carry?

About 236 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 143 over Oak Creek?

The structure is 65 ft (19.8 m) long with a longest span of 60 ft (18.3 m) and a deck 24 ft wide.

Who owns County Road 143 over Oak Creek?

It is owned by the County Highway Agency.