US Bridges

S.H. 78 over Chuckwa Creek

Good

Bryan County, Oklahoma · 0.93 N JCT US-70 · Structure no. 054870000000000

Built
1937
88 years old, rebuilt 2017
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
122 ft
3 main spans
Daily traffic
7,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 78 over Chuckwa Creek is a steel stringer/multi-beam or girder carrying S.H. 78 over Chuckwa Creek in Bryan County, Oklahoma. It was built in 1937 and reconstructed in 2017, so it is 88 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 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 7,400 vehicles a day, roughly 5% of them trucks, projected to reach 11,840 by 2042. The structure is 122 ft (37.2 m) long and 42 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesS.H. 78
CrossesChuckwa Creek
Location0.93 N JCT US-70
RouteState Highway 78
CountyBryan County
StateOklahoma
Coordinates34.01079, -96.37291
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length122 ft (37.2 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,400 (2022)
Projected traffic11,840 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 78 over Chuckwa Creek built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2017.

What condition is S.H. 78 over Chuckwa Creek 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 April 2024.

How much traffic does S.H. 78 over Chuckwa Creek carry?

About 7,400 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is S.H. 78 over Chuckwa Creek?

The structure is 122 ft (37.2 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns S.H. 78 over Chuckwa Creek?

It is owned by the State Highway Agency.