US Bridges

S.H. 11 over Salt Fork Ark. Riv Trib.

Fair

Alfalfa County, Oklahoma · 8.2E Jct. US64/SH 8 & 11 · Structure no. 267180000000000

Built
2005
20 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
197 ft
3 main spans
Daily traffic
1,500
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 11 over Salt Fork Ark. Riv Trib. is a prestressed concrete stringer/multi-beam or girder carrying S.H. 11 over Salt Fork Ark. Riv Trib. in Alfalfa County, Oklahoma. It was built in 2005, so it is 20 years old, younger 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 1,500 vehicles a day, roughly 15% of them trucks, projected to reach 2,400 by 2042. The structure is 197 ft (60 m) long and 41 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

Open in Google Maps
CarriesS.H. 11
CrossesSalt Fork Ark. Riv Trib.
Location8.2E Jct. US64/SH 8 & 11
RouteState Highway 11
CountyAlfalfa County
StateOklahoma
Coordinates36.81015, -98.2142
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating60.5 US tons
Inventory rating36.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length197 ft (60 m)
Longest span65 ft (19.8 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2022)
Projected traffic2,400 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 11 over Salt Fork Ark. Riv Trib. built?

It was built in 2005, making it 20 years old in 2025.

What condition is S.H. 11 over Salt Fork Ark. Riv Trib. 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 Salt Fork Ark. Riv Trib. carry?

About 1,500 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 11 over Salt Fork Ark. Riv Trib.?

The structure is 197 ft (60 m) long with a longest span of 65 ft (19.8 m) and a deck 41 ft wide.

Who owns S.H. 11 over Salt Fork Ark. Riv Trib.?

It is owned by the State Highway Agency.