US Bridges

Rs 308 RD B over Arkansas River

FairPosted for load

Hamilton County, Kansas · 1.0S of Coolidge · Structure no. 000000000380070

Built
1962
63 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete Continuous
Length
635 ft
11 main spans
Daily traffic
310
2022 count
Owner
County
County Highway Agency

About this bridge

Rs 308 RD B over Arkansas River is a concrete continuous tee beam carrying Rs 308 RD B over Arkansas River in Hamilton County, Kansas. It was built in 1962, so it is 63 years old, older than the Kansas average of 52.8 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. Its operating status is: posted for load restriction.

It carries about 310 vehicles a day, roughly 10% of them trucks, projected to reach 360 by 2041. The structure is 635 ft (193.5 m) long and 27 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesRs 308 RD B
CrossesArkansas River
Location1.0S of Coolidge
RouteCounty Highway 308
CountyHamilton County
StateKansas
Coordinates38.02834, -102.01172
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating15.1 US tons
Inventory rating9.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadH 15
Structure length635 ft (193.5 m)
Longest span60 ft (18.2 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic310 (2022)
Projected traffic360 by 2041
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 308 RD B over Arkansas River built?

It was built in 1962, making it 63 years old in 2025.

What condition is Rs 308 RD B 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 November 2023.

How much traffic does Rs 308 RD B over Arkansas River carry?

About 310 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Rs 308 RD B over Arkansas River?

The structure is 635 ft (193.5 m) long with a longest span of 60 ft (18.2 m) and a deck 27 ft wide.

Who owns Rs 308 RD B over Arkansas River?

It is owned by the County Highway Agency.