N2120 over Creek

Good

Tillman County, Oklahoma · 1.0 S. & 9.5 W. Frederick · Structure no. 095970000000000

Built: 1941; 84 years old
Condition: Good; inspected July 2023
Type: Slab; Concrete Continuous
Length: 23 ft; 2 main spans
Daily traffic: 60; 2022 count
Owner: County; County Highway Agency

About this bridge

N2120 over Creek is a concrete continuous slab carrying N2120 over Creek in Tillman 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 60 vehicles a day, roughly 10% of them trucks, projected to reach 96 by 2042. The structure is 23 ft (7 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN2120

CrossesCreek

Location1.0 S. & 9.5 W. Frederick

RouteCounty Highway N2120

CountyTillman County

StateOklahoma

Coordinates34.39241, -99.18491

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
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionJuly 2023

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 geometry7: Better than 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 loadUnknown

Structure length23 ft (7 m)

Longest span10 ft (3 m)

Deck width32 ft (9.9 m)

Roadway width30 ft (9.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)

Projected traffic96 by 2042

Trucks10%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed3.7 mi (6 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$225,000

NavigationNo navigation control on waterway

Frequently asked questions

When was N2120 over Creek built?

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

What condition is N2120 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 July 2023.

How much traffic does N2120 over Creek carry?

About 60 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2120 over Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns N2120 over Creek?

It is owned by the County Highway Agency.