US Bridges

N4750 (0122C) over Creek

FairPosted for load

Adair County, Oklahoma · 2E 2.6N of US 59 · Structure no. 100130000000000

Built
1943
82 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete
Length
24 ft
2 main spans
Daily traffic
118
2022 count
Owner
County
County Highway Agency

About this bridge

N4750 (0122C) over Creek is a concrete slab carrying N4750 (0122C) over Creek in Adair County, Oklahoma. It was built in 1943, so it is 82 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. Its operating status is: posted for load restriction.

It carries about 118 vehicles a day, roughly 15% of them trucks, projected to reach 189 by 2042. The structure is 24 ft (7.3 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN4750 (0122C)
CrossesCreek
Location2E 2.6N of US 59
RouteCounty Highway N4750
CountyAdair County
StateOklahoma
Coordinates36.025, -94.54806
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating33 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic118 (2022)
Projected traffic189 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$236,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4750 (0122C) over Creek built?

It was built in 1943, making it 82 years old in 2025.

What condition is N4750 (0122C) over 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 July 2023.

How much traffic does N4750 (0122C) over Creek carry?

About 118 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4750 (0122C) over Creek?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns N4750 (0122C) over Creek?

It is owned by the County Highway Agency.