US Bridges

IRR N3360 over Sandy Creek

Fair

Garvin County, Oklahoma · 6.1 S 3.3 W Stratford · Structure no. 199160000000000

Built
1981
44 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N3360 over Sandy Creek is a steel stringer/multi-beam or girder carrying IRR N3360 over Sandy Creek in Garvin County, Oklahoma. It was built in 1981, so it is 44 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 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 42 ft (12.8 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 N3360
CrossesSandy Creek
Location6.1 S 3.3 W Stratford
RouteCounty Highway N3360
CountyGarvin County
StateOklahoma
Coordinates34.70674, -97.02043
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.7 US tons
Inventory rating41.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length42 ft (12.8 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$319,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR N3360 over Sandy Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is IRR N3360 over Sandy 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 2024.

How much traffic does IRR N3360 over Sandy Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is IRR N3360 over Sandy Creek?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns IRR N3360 over Sandy Creek?

It is owned by the County Highway Agency.