US Bridges

6770C over Snake Creek

Fair

Seminole County, Oklahoma · .1 N & 1 W of Sylvian · Structure no. 129690000000000

Built
1953
72 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
500
2022 count
Owner
County
County Highway Agency

About this bridge

6770C over Snake Creek is a concrete culvert carrying 6770C over Snake Creek in Seminole County, Oklahoma. It was built in 1953, so it is 72 years old, older 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 500 vehicles a day, roughly 15% of them trucks, projected to reach 800 by 2042. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries6770C
CrossesSnake Creek
Location.1 N & 1 W of Sylvian
RouteCounty Highway 6770C
CountySeminole County
StateOklahoma
Coordinates35.35009, -96.58272
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
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length45 ft (13.7 m)
Longest span17 ft (5.2 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic800 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 6770C over Snake Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is 6770C over Snake Creek 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 August 2023.

How much traffic does 6770C over Snake Creek carry?

About 500 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 6770C over Snake Creek?

The structure is 45 ft (13.7 m) long with a longest span of 17 ft (5.2 m) and a deck 28 ft wide.

Who owns 6770C over Snake Creek?

It is owned by the County Highway Agency.