US Bridges

N3175 over Eight Mile Creek

Fair

Murray County, Oklahoma · 0.8S of Hennepin · Structure no. 288840000000000

Built
2009
16 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Concrete
Length
55 ft
1 main span
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

N3175 over Eight Mile Creek is a concrete tee beam carrying N3175 over Eight Mile Creek in Murray County, Oklahoma. It was built in 2009, so it is 16 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 24 vehicles a day, roughly 10% of them trucks, projected to reach 34 by 2042. The structure is 55 ft (16.9 m) long and 28 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesN3175
CrossesEight Mile Creek
Location0.8S of Hennepin
RouteCounty Highway N3175
Coordinates34.48611, -97.34472
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating81 US tons
Inventory rating38 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.9 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic34 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$555,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3175 over Eight Mile Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is N3175 over Eight Mile 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 N3175 over Eight Mile Creek carry?

About 24 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3175 over Eight Mile Creek?

The structure is 55 ft (16.9 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns N3175 over Eight Mile Creek?

It is owned by the County Highway Agency.