US Bridges

N3690 over Creek

FairPosted for load

Bryan County, Oklahoma · 4. W 4.8 S of Achille · Structure no. 163780000000000

Built
1940
85 years old, rebuilt 1990
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
49 ft
5 main spans
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

N3690 over Creek is a steel stringer/multi-beam or girder carrying N3690 over Creek in Bryan County, Oklahoma. It was built in 1940 and reconstructed in 1990, so it is 85 years old, older 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. Its operating status is: posted for load restriction.

It carries about 24 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2042. The structure is 49 ft (14.9 m) long and 16 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesN3690
CrossesCreek
Location4. W 4.8 S of Achille
RouteCounty Highway N3690
CountyBryan County
StateOklahoma
Coordinates33.78716, -96.44864
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans5
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span24 ft (7.3 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic38 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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$346,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3690 over Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1990.

What condition is N3690 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 June 2024.

How much traffic does N3690 over Creek carry?

About 24 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3690 over Creek?

The structure is 49 ft (14.9 m) long with a longest span of 24 ft (7.3 m) and a deck 16 ft wide.

Who owns N3690 over Creek?

It is owned by the County Highway Agency.