US Bridges

South Duncan Bypas over Seminole Rd. under

Good

Stephens County, Oklahoma · 7.9 N S.H. 53 · Structure no. 301370000000000

Built
2017
8 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
210 ft
3 main spans
Daily traffic
2,000
2022 count
Owner
State
State Highway Agency

About this bridge

South Duncan Bypas over Seminole Rd. under is a prestressed concrete stringer/multi-beam or girder carrying South Duncan Bypas over Seminole Rd. under in Stephens County, Oklahoma. It was built in 2017, so it is 8 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 2,000 vehicles a day, roughly 25% of them trucks, projected to reach 3,200 by 2042. The structure is 210 ft (64 m) long and 47 ft wide.

CarriesSouth Duncan Bypas
CrossesSeminole Rd. under
Location7.9 N S.H. 53
RouteState Highway 0_
Coordinates34.4781, -97.9771
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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.7 US tons
Inventory rating43.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length210 ft (64 m)
Longest span90 ft (27.4 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2022)
Projected traffic3,200 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was South Duncan Bypas over Seminole Rd. under built?

It was built in 2017, making it 8 years old in 2025.

What condition is South Duncan Bypas over Seminole 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 May 2024.

How much traffic does South Duncan Bypas over Seminole Rd. under carry?

About 2,000 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is South Duncan Bypas over Seminole Rd. under?

The structure is 210 ft (64 m) long with a longest span of 90 ft (27.4 m) and a deck 47 ft wide.

Who owns South Duncan Bypas over Seminole Rd. under?

It is owned by the State Highway Agency.