US Bridges

IRR 5734C over Simpkins Creek

Fair

Osage County, Oklahoma · 4.4E ARK.RIV.;5S of HWY60 · Structure no. 134220000000000

Built
1955
70 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
45 ft
1 main span
Daily traffic
380
2022 count
Owner
County
County Highway Agency

About this bridge

IRR 5734C over Simpkins Creek is a concrete stringer/multi-beam or girder carrying IRR 5734C over Simpkins Creek in Osage County, Oklahoma. It was built in 1955, so it is 70 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.

It carries about 380 vehicles a day, roughly 15% of them trucks, projected to reach 608 by 2042. The structure is 45 ft (13.7 m) long and 23 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesIRR 5734C
CrossesSimpkins Creek
Location4.4E ARK.RIV.;5S of HWY60
RouteCounty Highway 5734C
CountyOsage County
StateOklahoma
Coordinates36.60839, -96.97051
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length45 ft (13.7 m)
Longest span39 ft (11.9 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic380 (2022)
Projected traffic608 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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$331,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR 5734C over Simpkins Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is IRR 5734C over Simpkins 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 March 2024.

How much traffic does IRR 5734C over Simpkins Creek carry?

About 380 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is IRR 5734C over Simpkins Creek?

The structure is 45 ft (13.7 m) long with a longest span of 39 ft (11.9 m) and a deck 23 ft wide.

Who owns IRR 5734C over Simpkins Creek?

It is owned by the County Highway Agency.