US Bridges

U.S. 77 NB over BNSF R.R. under

Fair

Kay County, Oklahoma · 4.6 MI N US 60 · Structure no. 199800000000000

Built
1981
44 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
168 ft
3 main spans
Daily traffic
4,150
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 77 NB over BNSF R.R. under is a prestressed concrete stringer/multi-beam or girder carrying U.S. 77 NB over BNSF R.R. under in Kay County, Oklahoma. It was built in 1981, so it is 44 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 4,150 vehicles a day, roughly 16% of them trucks, projected to reach 6,640 by 2042. The structure is 168 ft (51.3 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesU.S. 77 NB
CrossesBNSF R.R. under
Location4.6 MI N US 60
RouteU.S. Route 77
CountyKay County
StateOklahoma
Coordinates36.77382, -97.06495
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length168 ft (51.3 m)
Longest span55 ft (16.8 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,150 (2022)
Projected traffic6,640 by 2042
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed—
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$1.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. 77 NB over BNSF R.R. under built?

It was built in 1981, making it 44 years old in 2025.

What condition is U.S. 77 NB 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 October 2023.

How much traffic does U.S. 77 NB over BNSF R.R. under carry?

About 4,150 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is U.S. 77 NB over BNSF R.R. under?

The structure is 168 ft (51.3 m) long with a longest span of 55 ft (16.8 m) and a deck 44 ft wide.

Who owns U.S. 77 NB over BNSF R.R. under?

It is owned by the State Highway Agency.