US Bridges

IRR E1670 (sw Lee) over Post Oak Creek

Good

Comanche County, Oklahoma · 2S 2.5E of Indiahoma · Structure no. 310180000000000

Built
2013
12 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
190 ft
3 main spans
Daily traffic
200
2022 count
Owner
County
County Highway Agency

About this bridge

IRR E1670 (sw Lee) over Post Oak Creek is a prestressed concrete stringer/multi-beam or girder carrying IRR E1670 (sw Lee) over Post Oak Creek in Comanche 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 200 vehicles a day, roughly 15% of them trucks, projected to reach 320 by 2042. The structure is 190 ft (57.9 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesIRR E1670 (sw Lee)
CrossesPost Oak Creek
Location2S 2.5E of Indiahoma
RouteCounty Highway E1670
Coordinates34.59466, -98.71221
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length190 ft (57.9 m)
Longest span65 ft (19.8 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic320 by 2042
Trucks15%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR E1670 (sw Lee) over Post Oak Creek built?

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

What condition is IRR E1670 (sw Lee) over Post Oak Creek 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 August 2023.

How much traffic does IRR E1670 (sw Lee) over Post Oak Creek carry?

About 200 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is IRR E1670 (sw Lee) over Post Oak Creek?

The structure is 190 ft (57.9 m) long with a longest span of 65 ft (19.8 m) and a deck 29 ft wide.

Who owns IRR E1670 (sw Lee) over Post Oak Creek?

It is owned by the County Highway Agency.