US Bridges

Co. Rd. N3380 over S.H. 7 Spur under

Fair

Murray County, Oklahoma · 2.9 MI NE of SH 7 · Structure no. 229220000000000

Built
1991
34 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
271 ft
4 main spans
Daily traffic
160
2022 count
Owner
State
State Highway Agency

About this bridge

Co. Rd. N3380 over S.H. 7 Spur under is a prestressed concrete continuous stringer/multi-beam or girder carrying Co. Rd. N3380 over S.H. 7 Spur under in Murray County, Oklahoma. It was built in 1991, so it is 34 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 160 vehicles a day, roughly 15% of them trucks, projected to reach 256 by 2042. The structure is 271 ft (82.6 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCo. Rd. N3380
CrossesS.H. 7 Spur under
Location2.9 MI NE of SH 7
RouteCounty Highway 0
CountyMurray County
StateOklahoma
Coordinates34.54098, -96.98472
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating75 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length271 ft (82.6 m)
Longest span90 ft (27.4 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2022)
Projected traffic256 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

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$1.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Co. Rd. N3380 over S.H. 7 Spur under built?

It was built in 1991, making it 34 years old in 2025.

What condition is Co. Rd. N3380 over S.H. 7 Spur 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 March 2024.

How much traffic does Co. Rd. N3380 over S.H. 7 Spur under carry?

About 160 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Co. Rd. N3380 over S.H. 7 Spur under?

The structure is 271 ft (82.6 m) long with a longest span of 90 ft (27.4 m) and a deck 33 ft wide.

Who owns Co. Rd. N3380 over S.H. 7 Spur under?

It is owned by the State Highway Agency.