US Bridges

IRR N2780 (6986C) over Creek

Fair

Stephens County, Oklahoma · 4W .9N of Duncan · Structure no. 305930000000000

Built
2012
13 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
381
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N2780 (6986C) over Creek is a steel stringer/multi-beam or girder carrying IRR N2780 (6986C) over Creek in Stephens County, Oklahoma. It was built in 2012, so it is 13 years old, younger 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 6 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 381 vehicles a day, roughly 15% of them trucks, projected to reach 610 by 2042. The structure is 44 ft (13.4 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIRR N2780 (6986C)
CrossesCreek
Location4W .9N of Duncan
RouteCounty Highway N2780
CountyStephens County
StateOklahoma
Coordinates34.51917, -98.03694
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span44 ft (13.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic381 (2022)
Projected traffic610 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR N2780 (6986C) over Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is IRR N2780 (6986C) over 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 June 2024.

How much traffic does IRR N2780 (6986C) over Creek carry?

About 381 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is IRR N2780 (6986C) over Creek?

The structure is 44 ft (13.4 m) long with a longest span of 44 ft (13.4 m) and a deck 24 ft wide.

Who owns IRR N2780 (6986C) over Creek?

It is owned by the County Highway Agency.