US Bridges

County Road 34.5 over Arkansas River

Fair

Bent County, Colorado · .7 MI S of CR Jj · Structure no. BT34-345-31-46A

Built
1994
31 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
374 ft
3 main spans
Daily traffic
173
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 34.5 over Arkansas River is a steel continuous stringer/multi-beam or girder carrying County Road 34.5 over Arkansas River in Bent County, Colorado. It was built in 1994, so it is 31 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 6 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 173 vehicles a day, roughly 2% of them trucks, projected to reach 199 by 2042. The structure is 374 ft (114 m) long and 29 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesCounty Road 34.5
CrossesArkansas River
Location.7 MI S of CR Jj
RouteCounty Highway 0
CountyBent County
StateColorado
Coordinates38.09333, -102.7683
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.2 US tons
Inventory rating26.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length374 ft (114 m)
Longest span135 ft (41.3 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic173 (2022)
Projected traffic199 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 34.5 over Arkansas River built?

It was built in 1994, making it 31 years old in 2025.

What condition is County Road 34.5 over Arkansas 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 January 2024.

How much traffic does County Road 34.5 over Arkansas River carry?

About 173 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 34.5 over Arkansas River?

The structure is 374 ft (114 m) long with a longest span of 135 ft (41.3 m) and a deck 29 ft wide.

Who owns County Road 34.5 over Arkansas River?

It is owned by the County Highway Agency.