US Bridges

Robbers Cave RD over Coon Creek

FairPosted for load

Latimer County, Oklahoma · 0.3 S Lake Carlton · Structure no. 288720000000000

Built
1945
80 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
107 ft
3 main spans
Daily traffic
50
2022 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Robbers Cave RD over Coon Creek is a steel continuous stringer/multi-beam or girder carrying Robbers Cave RD over Coon Creek in Latimer County, Oklahoma. It was built in 1945, so it is 80 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 107 ft (32.6 m) long and 23 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRobbers Cave RD
CrossesCoon Creek
Location0.3 S Lake Carlton
RouteState Lands Road N4306
CountyLatimer County
StateOklahoma
Coordinates34.97292, -95.35632
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.4 US tons
Inventory rating17 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span35 ft (10.7 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic80 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation 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$541,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Robbers Cave RD over Coon Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is Robbers Cave RD over Coon 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 February 2023.

How much traffic does Robbers Cave RD over Coon Creek carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Robbers Cave RD over Coon Creek?

The structure is 107 ft (32.6 m) long with a longest span of 35 ft (10.7 m) and a deck 23 ft wide.

Who owns Robbers Cave RD over Coon Creek?

It is owned by the State Park, Forest, or Reservation Agency and maintained by the State Highway Agency.