US Bridges

N3070 over Creek

FairPosted for load

Grant County, Oklahoma · .3N 1.2E .9N of Lamont · Structure no. 257900000000000

Built
1998
27 years old
Condition
Fair
inspected May 2024
Type
Other
Steel
Length
24 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N3070 over Creek is a steel other carrying N3070 over Creek in Grant County, Oklahoma. It was built in 1998, so it is 27 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 24 ft (7.3 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN3070
CrossesCreek
Location.3N 1.2E .9N of Lamont
RouteCounty Highway N3070
CountyGrant County
StateOklahoma
Coordinates36.70771, -97.53405
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
Deck7 GoodSome minor problems.
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24 US tons
Inventory rating14 US tons

Structure

Structure typeOther
MaterialSteel
DeckSteel plate
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6 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 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$236,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3070 over Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is N3070 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 May 2024.

How much traffic does N3070 over Creek carry?

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

How long is N3070 over Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 21 ft wide.

Who owns N3070 over Creek?

It is owned by the County Highway Agency.