US Bridges

N4320 over Pawpaw Creek

Fair

Craig County, Oklahoma · 7N of HWY 60 · Structure no. 302990000000000

Built
2011
14 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
46 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4320 over Pawpaw Creek is a concrete culvert carrying N4320 over Pawpaw Creek in Craig County, Oklahoma. It was built in 2011, so it is 14 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 46 ft (13.9 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesN4320
CrossesPawpaw Creek
Location7N of HWY 60
RouteCounty Highway N4320
CountyCraig County
StateOklahoma
Coordinates36.75278, -95.30583
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating21.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length46 ft (13.9 m)
Longest span14 ft (4.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 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 closed8.1 mi (13 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 proposedNone recorded
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4320 over Pawpaw Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is N4320 over Pawpaw Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does N4320 over Pawpaw Creek carry?

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

How long is N4320 over Pawpaw Creek?

The structure is 46 ft (13.9 m) long with a longest span of 14 ft (4.4 m) and a deck 26 ft wide.

Who owns N4320 over Pawpaw Creek?

It is owned by the County Highway Agency.