US Bridges

N2930 over Osage Creek

Fair

Grant County, Oklahoma · .3N2.8W3.6S of US81/SH11 · Structure no. 225480000000000

Built
1990
35 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

N2930 over Osage Creek is a steel stringer/multi-beam or girder carrying N2930 over Osage Creek in Grant County, Oklahoma. It was built in 1990, so it is 35 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 6 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 24 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2042. The structure is 56 ft (17.1 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN2930
CrossesOsage Creek
Location.3N2.8W3.6S of US81/SH11
RouteCounty Highway N2930
Coordinates36.75899, -97.78568
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating61 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length56 ft (17.1 m)
Longest span55 ft (16.9 m)
Deck width27 ft (8.3 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic38 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$372,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2930 over Osage Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is N2930 over Osage 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 May 2023.

How much traffic does N2930 over Osage Creek carry?

About 24 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2930 over Osage Creek?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.9 m) and a deck 27 ft wide.

Who owns N2930 over Osage Creek?

It is owned by the County Highway Agency.