US Bridges

N3945 over Creek

Fair

Washington County, Oklahoma · 1.5N 2.5W of Dewey · Structure no. 275490000000000

Built
2005
20 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
950
2022 count
Owner
County
County Highway Agency

About this bridge

N3945 over Creek is a concrete culvert carrying N3945 over Creek in Washington County, Oklahoma. It was built in 2005, so it is 20 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 950 vehicles a day, roughly 10% of them trucks, projected to reach 1,520 by 2042. The structure is 25 ft (7.7 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN3945
CrossesCreek
Location1.5N 2.5W of Dewey
RouteCounty Highway N3945
Coordinates36.82124, -95.98135
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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 rating91.5 US tons
Inventory rating54.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span10 ft (2.9 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2022)
Projected traffic1,520 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3945 over Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is N3945 over 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 October 2024.

How much traffic does N3945 over Creek carry?

About 950 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3945 over Creek?

The structure is 25 ft (7.7 m) long with a longest span of 10 ft (2.9 m) and a deck 44 ft wide.

Who owns N3945 over Creek?

It is owned by the County Highway Agency.