US Bridges

N4310 over Spaniard Creek

Good

Muskogee County, Oklahoma · 1.1 N .3 E of Keefton · Structure no. 244870000000000

Built
1997
28 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
81 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

N4310 over Spaniard Creek is a prestressed concrete stringer/multi-beam or girder carrying N4310 over Spaniard Creek in Muskogee County, Oklahoma. It was built in 1997, so it is 28 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 81 ft (24.8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesN4310
CrossesSpaniard Creek
Location1.1 N .3 E of Keefton
RouteCounty Highway N4310
Coordinates35.60318, -95.34029
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.8 US tons
Inventory rating41.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length81 ft (24.8 m)
Longest span75 ft (22.9 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic80 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$436,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was N4310 over Spaniard Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is N4310 over Spaniard 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 March 2024.

How much traffic does N4310 over Spaniard Creek carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4310 over Spaniard Creek?

The structure is 81 ft (24.8 m) long with a longest span of 75 ft (22.9 m) and a deck 28 ft wide.

Who owns N4310 over Spaniard Creek?

It is owned by the County Highway Agency.