US Bridges

W 1100 RD (rs 531) over Trib. to Prairie Dog Ck.

Good

Phillips County, Kansas · 1.0S of Long Island · Structure no. 000000000740130

Built
1940
85 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
350
2020 count
Owner
County
County Highway Agency

About this bridge

W 1100 RD (rs 531) over Trib. to Prairie Dog Ck. is a concrete continuous slab carrying W 1100 RD (rs 531) over Trib. to Prairie Dog Ck. in Phillips County, Kansas. It was built in 1940, so it is 85 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 350 vehicles a day, roughly 10% of them trucks, projected to reach 400 by 2044. The structure is 32 ft (9.8 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesW 1100 RD (rs 531)
CrossesTrib. to Prairie Dog Ck.
Location1.0S of Long Island
RouteCounty Highway 531
StateKansas
Coordinates39.92583, -99.53383
Functional classRural Major Collector

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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span15 ft (4.5 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic350 (2020)
Projected traffic400 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 W 1100 RD (rs 531) over Trib. to Prairie Dog Ck. built?

It was built in 1940, making it 85 years old in 2025.

What condition is W 1100 RD (rs 531) over Trib. to Prairie Dog Ck. 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 March 2024.

How much traffic does W 1100 RD (rs 531) over Trib. to Prairie Dog Ck. carry?

About 350 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is W 1100 RD (rs 531) over Trib. to Prairie Dog Ck.?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.5 m) and a deck 35 ft wide.

Who owns W 1100 RD (rs 531) over Trib. to Prairie Dog Ck.?

It is owned by the County Highway Agency.