US Bridges

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

Fair

Kingfisher County, Oklahoma · 5.3 MI N JCT SH 33 · Structure no. 161670000000000

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
284 ft
6 main spans
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 81 over UP R.R. under is a steel stringer/multi-beam or girder carrying U.S. 81 over UP R.R. under in Kingfisher County, Oklahoma. It was built in 1964, so it is 61 years old, older 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 2,500 vehicles a day, roughly 25% of them trucks, projected to reach 4,000 by 2042. The structure is 284 ft (86.6 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesU.S. 81
CrossesUP R.R. under
Location5.3 MI N JCT SH 33
RouteU.S. Route 81
CountyKingfisher County
StateOklahoma
Coordinates35.93167, -97.91639
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length284 ft (86.6 m)
Longest span57 ft (17.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic4,000 by 2042
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed—
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$2.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 1964, making it 61 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 July 2024.

How much traffic does U.S. 81 over UP R.R. under carry?

About 2,500 vehicles per day (2022 count), of which roughly 25% are trucks.

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

The structure is 284 ft (86.6 m) long with a longest span of 57 ft (17.4 m) and a deck 33 ft wide.

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

It is owned by the State Highway Agency.