US Bridges

5756C over Birch Creek

FairPosted for load

Osage County, Oklahoma · 4.0 MI SE of Boulanger · Structure no. 065520000000000

Built
1938
87 years old
Condition
Fair
inspected August 2023
Type
Truss - Thru
Steel
Length
136 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

5756C over Birch Creek is a steel truss - thru carrying 5756C over Birch Creek in Osage County, Oklahoma. It was built in 1938, so it is 87 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 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 136 ft (41.5 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries5756C
CrossesBirch Creek
Location4.0 MI SE of Boulanger
RouteCounty Highway 5756C
CountyOsage County
StateOklahoma
Coordinates36.91928, -96.17896
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating10.9 US tons
Inventory rating6.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadUnknown
Structure length136 ft (41.5 m)
Longest span104 ft (31.7 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks15%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$297,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 5756C over Birch Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is 5756C over Birch 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 August 2023.

How much traffic does 5756C over Birch Creek carry?

About 100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 5756C over Birch Creek?

The structure is 136 ft (41.5 m) long with a longest span of 104 ft (31.7 m) and a deck 16 ft wide.

Who owns 5756C over Birch Creek?

It is owned by the County Highway Agency.