US Bridges

S.H. 18 over Turner Tp (I-44) under

Good

Lincoln County, Oklahoma · 1.2 Mi. N. SH 66 · Structure no. 287410000000000

Built
2009
16 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
250 ft
2 main spans
Daily traffic
3,400
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 18 over Turner Tp (I-44) under is a prestressed concrete stringer/multi-beam or girder carrying S.H. 18 over Turner Tp (I-44) under in Lincoln County, Oklahoma. It was built in 2009, so it is 16 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 3,400 vehicles a day, roughly 15% of them trucks, projected to reach 5,440 by 2042. The structure is 250 ft (76.2 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS.H. 18
CrossesTurner Tp (I-44) under
Location1.2 Mi. N. SH 66
RouteState Highway 18
CountyLincoln County
StateOklahoma
Coordinates35.71871, -96.88443
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length250 ft (76.2 m)
Longest span133 ft (40.5 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic5,440 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 18 over Turner Tp (I-44) under built?

It was built in 2009, making it 16 years old in 2025.

What condition is S.H. 18 over Turner Tp (I-44) under 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 July 2024.

How much traffic does S.H. 18 over Turner Tp (I-44) under carry?

About 3,400 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 18 over Turner Tp (I-44) under?

The structure is 250 ft (76.2 m) long with a longest span of 133 ft (40.5 m) and a deck 40 ft wide.

Who owns S.H. 18 over Turner Tp (I-44) under?

It is owned by the State Highway Agency.