US Bridges

N4060 over Grave Creek

FairPosted for load

Okmulgee County, Oklahoma · 4.0 E; 0.8 S Morris · Structure no. 215320000000000

Built
1987
38 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4060 over Grave Creek is a prestressed concrete tee beam carrying N4060 over Grave Creek in Okmulgee County, Oklahoma. It was built in 1987, so it is 38 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 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 55 ft (16.9 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN4060
CrossesGrave Creek
Location4.0 E; 0.8 S Morris
RouteCounty Highway N4060
CountyOkmulgee County
StateOklahoma
Coordinates35.59786, -95.78413
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating21.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length55 ft (16.9 m)
Longest span53 ft (16.2 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 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$369,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4060 over Grave Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is N4060 over Grave 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 September 2023.

How much traffic does N4060 over Grave Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4060 over Grave Creek?

The structure is 55 ft (16.9 m) long with a longest span of 53 ft (16.2 m) and a deck 29 ft wide.

Who owns N4060 over Grave Creek?

It is owned by the County Highway Agency.