US Bridges

IRR N3250 over Birds Nest Creek

Fair

Noble County, Oklahoma · 4W 2.5N of US77/SH156 · Structure no. 308380000000000

Built
2013
12 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N3250 over Birds Nest Creek is a steel stringer/multi-beam or girder carrying IRR N3250 over Birds Nest Creek in Noble County, Oklahoma. It was built in 2013, so it is 12 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 50 ft (15.2 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIRR N3250
CrossesBirds Nest Creek
Location4W 2.5N of US77/SH156
RouteCounty Highway N3250
Coordinates36.58472, -97.21139
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating57 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic80 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR N3250 over Birds Nest Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is IRR N3250 over Birds Nest 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 IRR N3250 over Birds Nest Creek carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is IRR N3250 over Birds Nest Creek?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.

Who owns IRR N3250 over Birds Nest Creek?

It is owned by the County Highway Agency.