US Bridges

Minor 0.7-Y.0 over Trib. Flat Rock Creek

FairPosted for load

Bourbon County, Kansas · 2.0S 0.3W of Porterville · Structure no. 000061065706180

Built
1936
89 years old, rebuilt 1983
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
35
2006 count
Owner
County
County Highway Agency

About this bridge

Minor 0.7-Y.0 over Trib. Flat Rock Creek is a concrete continuous slab carrying Minor 0.7-Y.0 over Trib. Flat Rock Creek in Bourbon County, Kansas. It was built in 1936 and reconstructed in 1983, so it is 89 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 5 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 35 vehicles a day, projected to reach 35 by 2042. The structure is 37 ft (11.3 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMinor 0.7-Y.0
CrossesTrib. Flat Rock Creek
Location2.0S 0.3W of Porterville
RouteCounty Highway 602
StateKansas
Coordinates37.68905, -95.07609
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18 US tons
Inventory rating18 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span13 ft (4 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic35 (2006)
Projected traffic35 by 2042
Trucks0%
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$200,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Minor 0.7-Y.0 over Trib. Flat Rock Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1983.

What condition is Minor 0.7-Y.0 over Trib. Flat Rock 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 April 2024.

How much traffic does Minor 0.7-Y.0 over Trib. Flat Rock Creek carry?

About 35 vehicles per day (2006 count).

How long is Minor 0.7-Y.0 over Trib. Flat Rock Creek?

The structure is 37 ft (11.3 m) long with a longest span of 13 ft (4 m) and a deck 25 ft wide.

Who owns Minor 0.7-Y.0 over Trib. Flat Rock Creek?

It is owned by the County Highway Agency.