US Bridges

N3270 over Red Branch Creek

Fair

Murray County, Oklahoma · 3.2 MI W of Davis · Structure no. 218560000000000

Built
1988
37 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
47 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N3270 over Red Branch Creek is a concrete culvert carrying N3270 over Red Branch Creek in Murray County, Oklahoma. It was built in 1988, so it is 37 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 47 ft (14.3 m) long and 50 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesN3270
CrossesRed Branch Creek
Location3.2 MI W of Davis
RouteCounty Highway N3270
Coordinates34.49905, -97.17788
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
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 loadHS 20
Structure length47 ft (14.3 m)
Longest span17 ft (5.2 m)
Deck width50 ft (15.2 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 N3270 over Red Branch Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is N3270 over Red Branch 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 January 2024.

How much traffic does N3270 over Red Branch Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3270 over Red Branch Creek?

The structure is 47 ft (14.3 m) long with a longest span of 17 ft (5.2 m) and a deck 50 ft wide.

Who owns N3270 over Red Branch Creek?

It is owned by the County Highway Agency.