US Bridges

S.H. 51 over U.S. Gypsum Rd. under

Good

Blaine County, Oklahoma · 10.4 MI E Dewey C/L · Structure no. 169500000000000

Built
1967
58 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
117 ft
3 main spans
Daily traffic
790
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 51 over U.S. Gypsum Rd. under is a steel stringer/multi-beam or girder carrying S.H. 51 over U.S. Gypsum Rd. under in Blaine County, Oklahoma. It was built in 1967, so it is 58 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 790 vehicles a day, roughly 15% of them trucks, projected to reach 1,264 by 2042. The structure is 117 ft (35.7 m) long and 36 ft wide. If it were closed, the detour would be 47.2 mi (76 km).

Location

Open in Google Maps
CarriesS.H. 51
CrossesU.S. Gypsum Rd. under
Location10.4 MI E Dewey C/L
RouteState Highway 51
CountyBlaine County
StateOklahoma
Coordinates36.07632, -98.46795
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52 US tons
Inventory rating40.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length117 ft (35.7 m)
Longest span45 ft (13.7 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic790 (2022)
Projected traffic1,264 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed47.2 mi (76 km)
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$1.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 51 over U.S. Gypsum Rd. under built?

It was built in 1967, making it 58 years old in 2025.

What condition is S.H. 51 over U.S. Gypsum Rd. 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 February 2024.

How much traffic does S.H. 51 over U.S. Gypsum Rd. under carry?

About 790 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 51 over U.S. Gypsum Rd. under?

The structure is 117 ft (35.7 m) long with a longest span of 45 ft (13.7 m) and a deck 36 ft wide.

Who owns S.H. 51 over U.S. Gypsum Rd. under?

It is owned by the State Highway Agency.