US Bridges

N2720 over Unnamed Creek

Good

Canadian County, Oklahoma · .6N 2W of Calumet · Structure no. 292590000000000

Built
2009
16 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
48 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N2720 over Unnamed Creek is a concrete culvert carrying N2720 over Unnamed Creek in Canadian County, Oklahoma. It was built in 2009, so it is 16 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 48 ft (14.5 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN2720
CrossesUnnamed Creek
Location.6N 2W of Calumet
RouteCounty Highway N2720
Coordinates35.60944, -98.15417
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
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 rating110.1 US tons
Inventory rating66.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length48 ft (14.5 m)
Longest span14 ft (4.4 m)
Deck width43 ft (13.1 m)
Roadway width41 ft (12.4 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$300,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2720 over Unnamed Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is N2720 over Unnamed 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 September 2023.

How much traffic does N2720 over Unnamed Creek carry?

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

How long is N2720 over Unnamed Creek?

The structure is 48 ft (14.5 m) long with a longest span of 14 ft (4.4 m) and a deck 43 ft wide.

Who owns N2720 over Unnamed Creek?

It is owned by the County Highway Agency.