US Bridges

S.H. 66 over Shell Creek

Fair

Canadian County, Oklahoma · 8.3 Mi. E. Jct. US81 · Structure no. 126300000000000

Built
1951
74 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
162 ft
4 main spans
Daily traffic
3,050
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 66 over Shell Creek is a steel stringer/multi-beam or girder carrying S.H. 66 over Shell Creek in Canadian County, Oklahoma. It was built in 1951, so it is 74 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 3,050 vehicles a day, roughly 15% of them trucks, projected to reach 4,880 by 2042. The structure is 162 ft (49.4 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesS.H. 66
CrossesShell Creek
Location8.3 Mi. E. Jct. US81
RouteState Highway 66
CountyCanadian County
StateOklahoma
Coordinates35.50774, -97.79084
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.3 US tons
Inventory rating43.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length162 ft (49.4 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,050 (2022)
Projected traffic4,880 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 66 over Shell Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is S.H. 66 over Shell 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 May 2023.

How much traffic does S.H. 66 over Shell Creek carry?

About 3,050 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 66 over Shell Creek?

The structure is 162 ft (49.4 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns S.H. 66 over Shell Creek?

It is owned by the State Highway Agency.