US Bridges

US24 HWY over Mill Creek

Fair

Riley County, Kansas · 6.17 MI SE JCT K82 · Structure no. 999902400810071

Built
1929
96 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
1,436
2023 count
Owner
State
State Highway Agency

About this bridge

US24 HWY over Mill Creek is a concrete culvert carrying US24 HWY over Mill Creek in Riley County, Kansas. It was built in 1929, so it is 96 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.

It carries about 1,436 vehicles a day, roughly 9% of them trucks, projected to reach 1,718 by 2044. The structure is 26 ft (7.8 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesUS24 HWY
CrossesMill Creek
Location6.17 MI SE JCT K82
RouteU.S. Route 24
CountyRiley County
StateKansas
Coordinates39.3475, -96.83056
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating72.5 US tons
Inventory rating43 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length26 ft (7.8 m)
Longest span8 ft (2.4 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,436 (2023)
Projected traffic1,718 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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 over Mill Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is US24 HWY over Mill 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 May 2023.

How much traffic does US24 HWY over Mill Creek carry?

About 1,436 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US24 HWY over Mill Creek?

The structure is 26 ft (7.8 m) long with a longest span of 8 ft (2.4 m) and a deck 32 ft wide.

Who owns US24 HWY over Mill Creek?

It is owned by the State Highway Agency.