US Bridges

11S Road (rs 903) over Trib. N Fork Prairie Dog

GoodPosted for load

Decatur County, Kansas · 10.5S 0.3E of Oberlin · Structure no. 000000000200330

Built
1962
63 years old
Condition
Good
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
55
2020 count
Owner
County
County Highway Agency

About this bridge

11S Road (rs 903) over Trib. N Fork Prairie Dog is a prestressed concrete tee beam carrying 11S Road (rs 903) over Trib. N Fork Prairie Dog in Decatur County, Kansas. It was built in 1962, so it is 63 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. Its operating status is: posted for load restriction.

It carries about 55 vehicles a day, roughly 10% of them trucks, projected to reach 65 by 2044. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries11S Road (rs 903)
CrossesTrib. N Fork Prairie Dog
Location10.5S 0.3E of Oberlin
RouteCounty Highway 903
CountyDecatur County
StateKansas
Coordinates39.66878, -100.53036
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 protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
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 rating32 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span23 ft (6.9 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic55 (2020)
Projected traffic65 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 11S Road (rs 903) over Trib. N Fork Prairie Dog built?

It was built in 1962, making it 63 years old in 2025.

What condition is 11S Road (rs 903) over Trib. N Fork Prairie Dog 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 October 2024.

How much traffic does 11S Road (rs 903) over Trib. N Fork Prairie Dog carry?

About 55 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 11S Road (rs 903) over Trib. N Fork Prairie Dog?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (6.9 m) and a deck 24 ft wide.

Who owns 11S Road (rs 903) over Trib. N Fork Prairie Dog?

It is owned by the County Highway Agency.