US Bridges

US24 HWY WB over Big Blue River

Good

Pottawatomie County, Kansas · 1.35 MI E Riley Coln WB · Structure no. 999902400750011

Built
1960
65 years old, rebuilt 1991
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
420 ft
3 main spans
Daily traffic
12,937
2023 count
Owner
State
State Highway Agency

About this bridge

US24 HWY WB over Big Blue River is a steel continuous stringer/multi-beam or girder carrying US24 HWY WB over Big Blue River in Pottawatomie County, Kansas. It was built in 1960 and reconstructed in 1991, so it is 65 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,937 vehicles a day, roughly 3% of them trucks, projected to reach 17,084 by 2044. The structure is 420 ft (127.9 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS24 HWY WB
CrossesBig Blue River
Location1.35 MI E Riley Coln WB
RouteU.S. Route 24
StateKansas
Coordinates39.1925, -96.5375
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.4 US tons
Inventory rating28.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length420 ft (127.9 m)
Longest span160 ft (48.8 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,937 (2023)
Projected traffic17,084 by 2044
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US24 HWY WB over Big Blue River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1991.

What condition is US24 HWY WB over Big Blue River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does US24 HWY WB over Big Blue River carry?

About 12,937 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is US24 HWY WB over Big Blue River?

The structure is 420 ft (127.9 m) long with a longest span of 160 ft (48.8 m) and a deck 42 ft wide.

Who owns US24 HWY WB over Big Blue River?

It is owned by the State Highway Agency.