US Bridges

IRR N3925 (osage) over Flat Rock Creek Trib.

Good

Osage County, Oklahoma · .1N of 36th St. N · Structure no. 311110000000000

Built
2013
12 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
27 ft
4 main spans
Daily traffic
960
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N3925 (osage) over Flat Rock Creek Trib. is a concrete culvert carrying IRR N3925 (osage) over Flat Rock Creek Trib. in Osage 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 960 vehicles a day, roughly 10% of them trucks, projected to reach 1,536 by 2042. The structure is 27 ft (8.2 m) long and 62 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIRR N3925 (osage)
CrossesFlat Rock Creek Trib.
Location.1N of 36th St. N
RouteCounty Highway N3925
CountyOsage County
StateOklahoma
Coordinates36.20719, -96.01069
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating41.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span6 ft (1.8 m)
Deck width62 ft (18.9 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic960 (2022)
Projected traffic1,536 by 2042
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR N3925 (osage) over Flat Rock Creek Trib. built?

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

What condition is IRR N3925 (osage) over Flat Rock Creek Trib. in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does IRR N3925 (osage) over Flat Rock Creek Trib. carry?

About 960 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is IRR N3925 (osage) over Flat Rock Creek Trib.?

The structure is 27 ft (8.2 m) long with a longest span of 6 ft (1.8 m) and a deck 62 ft wide.

Who owns IRR N3925 (osage) over Flat Rock Creek Trib.?

It is owned by the County Highway Agency.