N3580 over Creek

Poor

Seminole County, Oklahoma · .2 S & 2 E of Little · Structure no. 019540000000000

Built: 1928; 97 years old
Condition: Poor; inspected July 2023
Type: Slab; Concrete Continuous
Length: 24 ft; 2 main spans
Daily traffic: 100; 2022 count
Owner: County; County Highway Agency

About this bridge

N3580 over Creek is a concrete continuous slab carrying N3580 over Creek in Seminole County, Oklahoma. It was built in 1928, so it is 97 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 24 ft (7.4 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN3580

CrossesCreek

Location.2 S & 2 E of Little

RouteCounty Highway N3580

CountySeminole County

StateOklahoma

Coordinates35.34433, -96.63574

Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	4 Poor	Advanced section loss, deterioration, spalling or scour.
Channel and channel protection	3 Serious	Loss of section, deterioration, spalling or scour have seriously affected primary structural components.

Last inspectionJuly 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; action required to protect exposed foundations

Structural evaluation4: Meets minimum tolerable limits to be left in place as is

Deck geometry6: Equal to present minimum criteria

Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is

Approach roadway alignment8: Equal to present desirable criteria

Operating rating36 US tons

Inventory rating21.1 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans2

Design loadHS 20

Structure length24 ft (7.4 m)

Longest span10 ft (3 m)

Deck width28 ft (8.5 m)

Roadway width26 ft (7.9 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$241,000

NavigationNo navigation control on waterway

Frequently asked questions

When was N3580 over Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is N3580 over Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does N3580 over Creek carry?

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

How long is N3580 over Creek?

The structure is 24 ft (7.4 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.

Who owns N3580 over Creek?

It is owned by the County Highway Agency.