US Bridges

N3930 Half Bank RD over Rock Creek

Fair

Atoka County, Oklahoma · 2W 2.3N of Lane · Structure no. 236890000000000

Built
1994
31 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

N3930 Half Bank RD over Rock Creek is a concrete culvert carrying N3930 Half Bank RD over Rock Creek in Atoka County, Oklahoma. It was built in 1994, so it is 31 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 5 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2042. The structure is 40 ft (12.2 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN3930 Half Bank RD
CrossesRock Creek
Location2W 2.3N of Lane
RouteCounty Highway N3930
CountyAtoka County
StateOklahoma
Coordinates34.33166, -96.02286
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 protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.7 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic120 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3930 Half Bank RD over Rock Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is N3930 Half Bank RD over Rock 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 January 2024.

How much traffic does N3930 Half Bank RD over Rock Creek carry?

About 75 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3930 Half Bank RD over Rock Creek?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m) and a deck 46 ft wide.

Who owns N3930 Half Bank RD over Rock Creek?

It is owned by the County Highway Agency.