US Bridges

N2120 over Creek

Good

Jackson County, Oklahoma · 8.0E of Blair; 0.5S SH-19 · Structure no. 273550000000000

Built
2003
22 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

N2120 over Creek is a concrete culvert carrying N2120 over Creek in Jackson County, Oklahoma. It was built in 2003, so it is 22 years old, younger 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 37 ft (11.3 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN2120
CrossesCreek
Location8.0E of Blair; 0.5S SH-19
RouteCounty Highway N2120
Coordinates34.77646, -99.1946
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.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span11 ft (3.4 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 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 2003, making it 22 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 June 2024.

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 37 ft (11.3 m) long with a longest span of 11 ft (3.4 m) and a deck 44 ft wide.

Who owns N2120 over Creek?

It is owned by the County Highway Agency.