US Bridges

N4075 (7 St.) over Drainage Canal

FairPosted for load

Pittsburg County, Oklahoma · 200 Ft S of Delaware Ave. · Structure no. 000020000000000

Built
1946
79 years old
Condition
Fair
inspected August 2023
Type
Frame
Concrete
Length
31 ft
1 main span
Daily traffic
300
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N4075 (7 St.) over Drainage Canal is a concrete frame carrying N4075 (7 St.) over Drainage Canal in Pittsburg County, Oklahoma. It was built in 1946, so it is 79 years old, older 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 300 vehicles a day, roughly 5% of them trucks, projected to reach 480 by 2042. The structure is 31 ft (9.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN4075 (7 St.)
CrossesDrainage Canal
Location200 Ft S of Delaware Ave.
RouteCity Street N4075
CountyPittsburg County
StateOklahoma
Coordinates34.92514, -95.7624
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width43 ft (13.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)
Projected traffic480 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$270,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4075 (7 St.) over Drainage Canal built?

It was built in 1946, making it 79 years old in 2025.

What condition is N4075 (7 St.) over Drainage Canal 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 August 2023.

How much traffic does N4075 (7 St.) over Drainage Canal carry?

About 300 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N4075 (7 St.) over Drainage Canal?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 43 ft wide.

Who owns N4075 (7 St.) over Drainage Canal?

It is owned by the City or Municipal Highway Agency.