US Bridges

S.H. 31A over Bois Darc Creek Br.

Good

Hughes County, Oklahoma · 3.6 MI N JCT SH 31 · Structure no. 189280000000000

Built
1975
50 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
2,000
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 31A over Bois Darc Creek Br. is a concrete culvert carrying S.H. 31A over Bois Darc Creek Br. in Hughes 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 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 2,000 vehicles a day, roughly 15% of them trucks, projected to reach 3,200 by 2042. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS.H. 31A
CrossesBois Darc Creek Br.
Location3.6 MI N JCT SH 31
RouteState Highway 31A
CountyHughes County
StateOklahoma
Coordinates34.88951, -96.08894
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span8 ft (2.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2022)
Projected traffic3,200 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$644,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 31A over Bois Darc Creek Br. built?

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

What condition is S.H. 31A over Bois Darc Creek Br. 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 S.H. 31A over Bois Darc Creek Br. carry?

About 2,000 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 31A over Bois Darc Creek Br.?

The structure is 31 ft (9.4 m) long with a longest span of 8 ft (2.4 m) and a deck 24 ft wide.

Who owns S.H. 31A over Bois Darc Creek Br.?

It is owned by the State Highway Agency.