US Bridges

N2825 (21 St) over Line Creek

Fair

Grady County, Oklahoma · N of Iowa Ave on 21 ST · Structure no. 197410000000000

Built
1980
45 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
51 ft
4 main spans
Daily traffic
1,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N2825 (21 St) over Line Creek is a concrete culvert carrying N2825 (21 St) over Line Creek in Grady County, Oklahoma. It was built in 1980, so it is 45 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,600 by 2042. The structure is 51 ft (15.5 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN2825 (21 St)
CrossesLine Creek
LocationN of Iowa Ave on 21 ST
RouteCity Street N2825
CountyGrady County
StateOklahoma
Coordinates35.05246, -97.96132
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.4 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span12 ft (3.7 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2022)
Projected traffic1,600 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2825 (21 St) over Line Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is N2825 (21 St) 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 N2825 (21 St) over Line Creek carry?

About 1,000 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2825 (21 St) over Line Creek?

The structure is 51 ft (15.5 m) long with a longest span of 12 ft (3.7 m) and a deck 34 ft wide.

Who owns N2825 (21 St) over Line Creek?

It is owned by the City or Municipal Highway Agency.