US Bridges

D4780 over Black Fork Creek

Good

Le Flore County, Oklahoma · 1.5 N; 0.5 W Hicks · Structure no. 177830000000000

Built
2011
14 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
40 ft
2 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

D4780 over Black Fork Creek is a concrete stringer/multi-beam or girder carrying D4780 over Black Fork Creek in Le Flore County, Oklahoma. It was built in 2011, so it is 14 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2042. The structure is 40 ft (12.3 m) long and 14 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesD4780
CrossesBlack Fork Creek
Location1.5 N; 0.5 W Hicks
RouteCounty Highway D4780
CountyLe Flore County
StateOklahoma
Coordinates34.79254, -94.52575
Functional classRural Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating83 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span20 ft (6.1 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic40 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was D4780 over Black Fork Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is D4780 over Black Fork 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 March 2023.

How much traffic does D4780 over Black Fork Creek carry?

About 25 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is D4780 over Black Fork Creek?

The structure is 40 ft (12.3 m) long with a longest span of 20 ft (6.1 m) and a deck 14 ft wide.

Who owns D4780 over Black Fork Creek?

It is owned by the County Highway Agency.