US Bridges

N4305 (8th St) over Rock Creek

Good

Pushmataha County, Oklahoma · 8th & Flagpole · Structure no. 304490000000000

Built
2012
13 years old
Condition
Good
inspected March 2024
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
24
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N4305 (8th St) over Rock Creek is a steel culvert carrying N4305 (8th St) over Rock Creek in Pushmataha County, Oklahoma. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 24 vehicles a day, roughly 5% of them trucks, projected to reach 38 by 2042. The structure is 21 ft (6.4 m) long and 24 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesN4305 (8th St)
CrossesRock Creek
Location8th & Flagpole
RouteCounty Highway N4305
CountyPushmataha County
StateOklahoma
Coordinates34.59361, -95.36556
Functional classUrban 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.
Culvert8 Very GoodNo problems noted.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span9 ft (2.6 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic38 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal 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 N4305 (8th St) over Rock Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is N4305 (8th St) over Rock 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 N4305 (8th St) over Rock Creek carry?

About 24 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N4305 (8th St) over Rock Creek?

The structure is 21 ft (6.4 m) long with a longest span of 9 ft (2.6 m) and a deck 24 ft wide.

Who owns N4305 (8th St) over Rock Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.