N2815 over Creek

Good

Garfield County, Oklahoma · 0.2 MI S of Hillsdale · Structure no. 095610000000000

Built: 1941; 84 years old
Condition: Good; inspected March 2024
Type: Culvert; Concrete
Length: 28 ft; 3 main spans
Daily traffic: 100; 2022 count
Owner: County; County Highway Agency

About this bridge

N2815 over Creek is a concrete culvert carrying N2815 over Creek in Garfield County, Oklahoma. It was built in 1941, so it is 84 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 28 ft (8.5 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesN2815

CrossesCreek

Location0.2 MI S of Hillsdale

RouteCounty Highway N2815

CountyGarfield County

StateOklahoma

Coordinates36.55407, -97.98845

Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert	7 Good	Some minor problems.

Last inspectionMarch 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

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 typeCulvert

MaterialConcrete

DeckConcrete, cast-in-place

Main spans3

Design loadUnknown

Structure length28 ft (8.5 m)

Longest span8 ft (2.4 m)

Deck width26 ft (7.8 m)

Roadway width23 ft (7 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 closed1.2 mi (2 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$256,000

NavigationNo navigation control on waterway

Frequently asked questions

When was N2815 over Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is N2815 over Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does N2815 over Creek carry?

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

How long is N2815 over Creek?

The structure is 28 ft (8.5 m) long with a longest span of 8 ft (2.4 m) and a deck 26 ft wide.

Who owns N2815 over Creek?

It is owned by the County Highway Agency.