US Bridges

N4645 (0138C) over Creek

GoodPosted for load

Adair County, Oklahoma · 3.5E 2.5S of SH 100 · Structure no. 136940000000000

Built
1957
68 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
673
2022 count
Owner
County
County Highway Agency

About this bridge

N4645 (0138C) over Creek is a concrete culvert carrying N4645 (0138C) over Creek in Adair County, Oklahoma. It was built in 1957, so it is 68 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 673 vehicles a day, roughly 15% of them trucks, projected to reach 1,077 by 2042. The structure is 23 ft (7 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesN4645 (0138C)
CrossesCreek
Location3.5E 2.5S of SH 100
RouteCounty Highway N4645
CountyAdair County
StateOklahoma
Coordinates35.72544, -94.7453
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.4 US tons
Inventory rating23.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic673 (2022)
Projected traffic1,077 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 N4645 (0138C) over Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is N4645 (0138C) over 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 July 2023.

How much traffic does N4645 (0138C) over Creek carry?

About 673 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4645 (0138C) over Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns N4645 (0138C) over Creek?

It is owned by the County Highway Agency.