US Bridges

U.S. 287 over U.S. 56 under

Good

Cimarron County, Oklahoma · JCT of U.S. 56 & U.S. 287 · Structure no. 293780000000000

Built
2011
14 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
203 ft
1 main span
Daily traffic
2,200
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 287 over U.S. 56 under is a prestressed concrete stringer/multi-beam or girder carrying U.S. 287 over U.S. 56 under in Cimarron County, Oklahoma. It was built in 2011, so it is 14 years old, younger 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 2,200 vehicles a day, roughly 16% of them trucks, projected to reach 3,520 by 2042. The structure is 203 ft (61.9 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesU.S. 287
CrossesU.S. 56 under
LocationJCT of U.S. 56 & U.S. 287
RouteU.S. Route 287
CountyCimarron County
StateOklahoma
Coordinates36.72556, -102.48333
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckNot applicable
Main spans1 (+2 approach)
Design loadHL 93
Structure length203 ft (61.9 m)
Longest span108 ft (32.9 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2022)
Projected traffic3,520 by 2042
Trucks16%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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$225,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. 287 over U.S. 56 under built?

It was built in 2011, making it 14 years old in 2025.

What condition is U.S. 287 over U.S. 56 under 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 October 2024.

How much traffic does U.S. 287 over U.S. 56 under carry?

About 2,200 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is U.S. 287 over U.S. 56 under?

The structure is 203 ft (61.9 m) long with a longest span of 108 ft (32.9 m) and a deck 47 ft wide.

Who owns U.S. 287 over U.S. 56 under?

It is owned by the State Highway Agency.