US Bridges

N2820 over Line Creek

FairPosted for load

Grady County, Oklahoma · .1S of 29th / Idaho · Structure no. 300900000000000

Built
2010
15 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
1,156
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N2820 over Line Creek is a concrete culvert carrying N2820 over Line Creek in Grady County, Oklahoma. It was built in 2010, so it is 15 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. Its operating status is: posted for load restriction.

It carries about 1,156 vehicles a day, roughly 15% of them trucks, projected to reach 249 by 2042. The structure is 31 ft (9.6 m) long and 120 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN2820
CrossesLine Creek
Location.1S of 29th / Idaho
RouteCity Street N2820
CountyGrady County
StateOklahoma
Coordinates35.04378, -97.97031
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.6 m)
Longest span10 ft (3 m)
Deck width120 ft (36.6 m)
Roadway width118 ft (36 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,156 (2022)
Projected traffic249 by 2042
Trucks15%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2820 over Line Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is N2820 over Line 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 February 2023.

How much traffic does N2820 over Line Creek carry?

About 1,156 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N2820 over Line Creek?

The structure is 31 ft (9.6 m) long with a longest span of 10 ft (3 m) and a deck 120 ft wide.

Who owns N2820 over Line Creek?

It is owned by the City or Municipal Highway Agency.