US Bridges

S.H. 11 over Bois Darc Creek

Fair

Kay County, Oklahoma · 10.1 MI E JCT US 177 · Structure no. 190640000000000

Built
1975
50 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
163 ft
3 main spans
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 11 over Bois Darc Creek is a prestressed concrete stringer/multi-beam or girder carrying S.H. 11 over Bois Darc Creek in Kay County, Oklahoma. It was built in 1975, so it is 50 years old, older than the Oklahoma average of 47.8 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.

It carries about 2,500 vehicles a day, roughly 16% of them trucks, projected to reach 4,000 by 2042. The structure is 163 ft (49.6 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesS.H. 11
CrossesBois Darc Creek
Location10.1 MI E JCT US 177
RouteState Highway 11
CountyKay County
StateOklahoma
Coordinates36.81095, -97.10298
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.3 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length163 ft (49.6 m)
Longest span60 ft (18.3 m)
Deck width46 ft (13.9 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic4,000 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 11 over Bois Darc Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is S.H. 11 over Bois Darc 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 October 2023.

How much traffic does S.H. 11 over Bois Darc Creek carry?

About 2,500 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is S.H. 11 over Bois Darc Creek?

The structure is 163 ft (49.6 m) long with a longest span of 60 ft (18.3 m) and a deck 46 ft wide.

Who owns S.H. 11 over Bois Darc Creek?

It is owned by the State Highway Agency.