US Bridges

IRR N4660 over Brush Creek

Fair

Ottawa County, Oklahoma · 2.0E& .5S of Wyandotte · Structure no. 222040000000000

Built
1989
36 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
46 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N4660 over Brush Creek is a concrete culvert carrying IRR N4660 over Brush Creek in Ottawa County, Oklahoma. It was built in 1989, so it is 36 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 5 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 46 ft (14 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIRR N4660
CrossesBrush Creek
Location2.0E& .5S of Wyandotte
RouteCounty Highway N4660
CountyOttawa County
StateOklahoma
Coordinates36.77675, -94.67968
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating88.2 US tons
Inventory rating52.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length46 ft (14 m)
Longest span17 ft (5.2 m)
Deck width34 ft (10.5 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-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 statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR N4660 over Brush Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is IRR N4660 over Brush 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 September 2023.

How much traffic does IRR N4660 over Brush Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is IRR N4660 over Brush Creek?

The structure is 46 ft (14 m) long with a longest span of 17 ft (5.2 m) and a deck 34 ft wide.

Who owns IRR N4660 over Brush Creek?

It is owned by the County Highway Agency.