US Bridges

County Road 23A over White River

FairPosted for load

Rio Blanco County, Colorado · 0.75 MI N of ST HWY 64 · Structure no. RIOB-23A-00.00

Built
1940
85 years old, rebuilt 1975
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
130 ft
1 main span
Daily traffic
184
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 23A over White River is a steel truss - thru carrying County Road 23A over White River in Rio Blanco County, Colorado. It was built in 1940 and reconstructed in 1975, so it is 85 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. Its operating status is: posted for other load-capacity restriction.

It carries about 184 vehicles a day, roughly 41% of them trucks, projected to reach 220 by 2043. The structure is 130 ft (39.6 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCounty Road 23A
CrossesWhite River
Location0.75 MI N of ST HWY 64
RouteCounty Highway 0
CountyRio Blanco County
StateColorado
Coordinates40.09733, -108.80909
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.2 US tons
Inventory rating13.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span122 ft (37.2 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic184 (2023)
Projected traffic220 by 2043
Trucks41%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 23A over White River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1975.

What condition is County Road 23A over White River 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 September 2024.

How much traffic does County Road 23A over White River carry?

About 184 vehicles per day (2023 count), of which roughly 41% are trucks.

How long is County Road 23A over White River?

The structure is 130 ft (39.6 m) long with a longest span of 122 ft (37.2 m) and a deck 32 ft wide.

Who owns County Road 23A over White River?

It is owned by the County Highway Agency.