US Bridges

S.H. 78 over U.S. 70 Bypass under

Fair

Bryan County, Oklahoma · 2 S of U.S. 70 · Structure no. 298190000000000

Built
2015
10 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
270 ft
2 main spans
Daily traffic
4,600
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 78 over U.S. 70 Bypass under is a prestressed concrete stringer/multi-beam or girder carrying S.H. 78 over U.S. 70 Bypass under in Bryan County, Oklahoma. It was built in 2015, so it is 10 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 4,600 vehicles a day, roughly 25% of them trucks, projected to reach 6,400 by 2042. The structure is 270 ft (82.3 m) long and 82 ft wide.

CarriesS.H. 78
CrossesU.S. 70 Bypass under
Location2 S of U.S. 70
RouteState Highway 78
Coordinates33.96505, -96.373
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length270 ft (82.3 m)
Longest span135 ft (41.1 m)
Deck width82 ft (25 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2022)
Projected traffic6,400 by 2042
Trucks25%
Lanes on structure5
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 S.H. 78 over U.S. 70 Bypass under built?

It was built in 2015, making it 10 years old in 2025.

What condition is S.H. 78 over U.S. 70 Bypass 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 April 2024.

How much traffic does S.H. 78 over U.S. 70 Bypass under carry?

About 4,600 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is S.H. 78 over U.S. 70 Bypass under?

The structure is 270 ft (82.3 m) long with a longest span of 135 ft (41.1 m) and a deck 82 ft wide.

Who owns S.H. 78 over U.S. 70 Bypass under?

It is owned by the State Highway Agency.