US Bridges

N4370 over Spring Creek

Fair

Mayes County, Oklahoma · 7.5SE of US412 US 69 · Structure no. 124820000000000

Built
1950
75 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
321 ft
8 main spans
Daily traffic
225
2022 count
Owner
County
County Highway Agency

About this bridge

N4370 over Spring Creek is a concrete stringer/multi-beam or girder carrying N4370 over Spring Creek in Mayes County, Oklahoma. It was built in 1950, so it is 75 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.

It carries about 225 vehicles a day, roughly 10% of them trucks, projected to reach 360 by 2042. The structure is 321 ft (97.8 m) long and 19 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

Location

Open in Google Maps
CarriesN4370
CrossesSpring Creek
Location7.5SE of US412 US 69
RouteCounty Highway N4370
CountyMayes County
StateOklahoma
Coordinates36.11868, -95.22449
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length321 ft (97.8 m)
Longest span38 ft (11.6 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2022)
Projected traffic360 by 2042
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.3 mi (15 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$924,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4370 over Spring Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is N4370 over Spring 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 April 2023.

How much traffic does N4370 over Spring Creek carry?

About 225 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4370 over Spring Creek?

The structure is 321 ft (97.8 m) long with a longest span of 38 ft (11.6 m) and a deck 19 ft wide.

Who owns N4370 over Spring Creek?

It is owned by the County Highway Agency.