US Bridges

S.H. 66 over Rat Creek

Good

Lincoln County, Oklahoma · 10.1 MI E Okla. C/L · Structure no. 125880000000000

Built
1951
74 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
48 ft
3 main spans
Daily traffic
3,800
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 66 over Rat Creek is a concrete culvert carrying S.H. 66 over Rat Creek in Lincoln 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 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 3,800 vehicles a day, roughly 15% of them trucks, projected to reach 6,080 by 2042. The structure is 48 ft (14.6 m) long and 24 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

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CarriesS.H. 66
CrossesRat Creek
Location10.1 MI E Okla. C/L
RouteState Highway 66
CountyLincoln County
StateOklahoma
Coordinates35.6933, -96.97044
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.8 US tons
Inventory rating33.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span14 ft (4.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2022)
Projected traffic6,080 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$644,000
NavigationNo navigation control on waterway

Frequently asked questions

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

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

What condition is S.H. 66 over Rat 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 2024.

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

About 3,800 vehicles per day (2022 count), of which roughly 15% are trucks.

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

The structure is 48 ft (14.6 m) long with a longest span of 14 ft (4.3 m) and a deck 24 ft wide.

Who owns S.H. 66 over Rat Creek?

It is owned by the State Highway Agency.