US Bridges

N4300 over Rock Creek

Good

Choctaw County, Oklahoma · 2. S & 1. W of Sawyer · Structure no. 123150000000000

Built
1997
28 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4300 over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying N4300 over Rock Creek in Choctaw County, Oklahoma. It was built in 1997, so it is 28 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 90 ft (27.4 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesN4300
CrossesRock Creek
Location2. S & 1. W of Sawyer
RouteCounty Highway N4300
Coordinates33.98688, -95.38221
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span87 ft (26.5 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 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 closed3.1 mi (5 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$439,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4300 over Rock Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is N4300 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 October 2024.

How much traffic does N4300 over Rock Creek carry?

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

How long is N4300 over Rock Creek?

The structure is 90 ft (27.4 m) long with a longest span of 87 ft (26.5 m) and a deck 28 ft wide.

Who owns N4300 over Rock Creek?

It is owned by the County Highway Agency.