US Bridges

U.S. 56 over BNSF R.R. under

Fair

Cimarron County, Oklahoma · 0.2 Mi. W. Jct. US287 · Structure no. 220680000000000

Built
1988
37 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
229 ft
3 main spans
Daily traffic
4,600
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 56 over BNSF R.R. under is a prestressed concrete stringer/multi-beam or girder carrying U.S. 56 over BNSF R.R. under in Cimarron County, Oklahoma. It was built in 1988, so it is 37 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 5 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 4,600 vehicles a day, roughly 25% of them trucks, projected to reach 7,360 by 2042. The structure is 229 ft (69.8 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesU.S. 56
CrossesBNSF R.R. under
Location0.2 Mi. W. Jct. US287
RouteU.S. Route 56
CountyCimarron County
StateOklahoma
Coordinates36.7272, -102.48787
Functional classRural Principal Arterial - Other

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.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length229 ft (69.8 m)
Longest span75 ft (22.9 m)
Deck width58 ft (17.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2022)
Projected traffic7,360 by 2042
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$3.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. 56 over BNSF R.R. under built?

It was built in 1988, making it 37 years old in 2025.

What condition is U.S. 56 over BNSF R.R. under 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 May 2023.

How much traffic does U.S. 56 over BNSF R.R. under carry?

About 4,600 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is U.S. 56 over BNSF R.R. under?

The structure is 229 ft (69.8 m) long with a longest span of 75 ft (22.9 m) and a deck 58 ft wide.

Who owns U.S. 56 over BNSF R.R. under?

It is owned by the State Highway Agency.