US Bridges

U.S. 81 over UP R.R. under

Fair

Canadian County, Oklahoma · 1.0 Mi. N. Jct. SH66 · Structure no. 249930000000000

Built
1996
29 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
273 ft
3 main spans
Daily traffic
8,000
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 81 over UP R.R. under is a prestressed concrete stringer/multi-beam or girder carrying U.S. 81 over UP R.R. under in Canadian County, Oklahoma. It was built in 1996, so it is 29 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 8,000 vehicles a day, roughly 7% of them trucks, projected to reach 12,800 by 2042. The structure is 273 ft (83.3 m) long and 65 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesU.S. 81
CrossesUP R.R. under
Location1.0 Mi. N. Jct. SH66
RouteU.S. Route 81
CountyCanadian County
StateOklahoma
Coordinates35.54146, -97.95483
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum 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 rating80 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length273 ft (83.3 m)
Longest span97 ft (29.5 m)
Deck width65 ft (19.8 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2022)
Projected traffic12,800 by 2042
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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$8.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. 81 over UP R.R. under built?

It was built in 1996, making it 29 years old in 2025.

What condition is U.S. 81 over UP 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. 81 over UP R.R. under carry?

About 8,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is U.S. 81 over UP R.R. under?

The structure is 273 ft (83.3 m) long with a longest span of 97 ft (29.5 m) and a deck 65 ft wide.

Who owns U.S. 81 over UP R.R. under?

It is owned by the State Highway Agency.