US Bridges

140 Rd. over Antelope Creek

FairPosted for load

Marion County, Kansas · 5.0S 0.9E of Hillsboro · Structure no. 000000000570230

Built
1946
79 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
114 ft
3 main spans
Daily traffic
70
2020 count
Owner
County
County Highway Agency

About this bridge

140 Rd. over Antelope Creek is a concrete continuous slab carrying 140 Rd. over Antelope Creek in Marion County, Kansas. It was built in 1946, so it is 79 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 70 vehicles a day, roughly 10% of them trucks, projected to reach 90 by 2045. The structure is 114 ft (34.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries140 Rd.
CrossesAntelope Creek
Location5.0S 0.9E of Hillsboro
RouteCounty Highway 423
CountyMarion County
StateKansas
Coordinates38.27531, -97.19019
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14 US tons
Inventory rating14 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length114 ft (34.7 m)
Longest span45 ft (13.6 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic70 (2020)
Projected traffic90 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 140 Rd. over Antelope Creek built?

It was built in 1946, making it 79 years old in 2025.

What condition is 140 Rd. over Antelope 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 January 2025.

How much traffic does 140 Rd. over Antelope Creek carry?

About 70 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 140 Rd. over Antelope Creek?

The structure is 114 ft (34.7 m) long with a longest span of 45 ft (13.6 m) and a deck 28 ft wide.

Who owns 140 Rd. over Antelope Creek?

It is owned by the County Highway Agency.