US Bridges

S.H. 66 over Slwc R.R. under

Good

Oklahoma County, Oklahoma · 13.7 MI E of JCT I-35 · Structure no. 226470000000000

Built
1990
35 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
153 ft
3 main spans
Daily traffic
3,100
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 66 over Slwc R.R. under is a prestressed concrete stringer/multi-beam or girder carrying S.H. 66 over Slwc R.R. under in Oklahoma County, Oklahoma. It was built in 1990, so it is 35 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 3,100 vehicles a day, roughly 15% of them trucks, projected to reach 4,960 by 2042. The structure is 153 ft (46.6 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS.H. 66
CrossesSlwc R.R. under
Location13.7 MI E of JCT I-35
RouteState Highway 66
CountyOklahoma County
StateOklahoma
Coordinates35.66707, -97.19161
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 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 rating53 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span50 ft (15.2 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2022)
Projected traffic4,960 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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$3.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was S.H. 66 over Slwc R.R. under built?

It was built in 1990, making it 35 years old in 2025.

What condition is S.H. 66 over Slwc R.R. 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 August 2024.

How much traffic does S.H. 66 over Slwc R.R. under carry?

About 3,100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 66 over Slwc R.R. under?

The structure is 153 ft (46.6 m) long with a longest span of 50 ft (15.2 m) and a deck 42 ft wide.

Who owns S.H. 66 over Slwc R.R. under?

It is owned by the State Highway Agency.