US Bridges

280th RD over Trib. to Chapman Creek

FairPosted for load

Ottawa County, Kansas · 9.0E 2.3N of Lamar · Structure no. 000720813003981

Built
1950
75 years old
Condition
Fair
inspected March 2024
Type
Girder and Floorbeam System
Steel
Length
42 ft
1 main span
Daily traffic
45
2001 count
Owner
County
County Highway Agency

About this bridge

280th RD over Trib. to Chapman Creek is a steel girder and floorbeam system carrying 280th RD over Trib. to Chapman Creek in Ottawa County, Kansas. It was built in 1950, so it is 75 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 45 vehicles a day, roughly 5% of them trucks, projected to reach 45 by 2044. The structure is 42 ft (12.8 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
Carries280th RD
CrossesTrib. to Chapman Creek
Location9.0E 2.3N of Lamar
RouteCounty Highway 0
CountyOttawa County
StateKansas
Coordinates39.28935, -97.40756
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating17.9 US tons
Inventory rating10.7 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span40 ft (12.3 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic45 (2001)
Projected traffic45 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$390,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 280th RD over Trib. to Chapman Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is 280th RD over Trib. to Chapman 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 March 2024.

How much traffic does 280th RD over Trib. to Chapman Creek carry?

About 45 vehicles per day (2001 count), of which roughly 5% are trucks.

How long is 280th RD over Trib. to Chapman Creek?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.3 m) and a deck 24 ft wide.

Who owns 280th RD over Trib. to Chapman Creek?

It is owned by the County Highway Agency.