US Bridges

1685C over Big Sandy Creek

Fair

Comanche County, Oklahoma · 3.8 N 9.4 W US62 SH115 · Structure no. 234440000000000

Built
1993
32 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
102 ft
3 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

1685C over Big Sandy Creek is a steel stringer/multi-beam or girder carrying 1685C over Big Sandy Creek in Comanche County, Oklahoma. It was built in 1993, so it is 32 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 25 vehicles a day, roughly 15% of them trucks, projected to reach 40 by 2042. The structure is 102 ft (31.1 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries1685C
CrossesBig Sandy Creek
Location3.8 N 9.4 W US62 SH115
RouteCounty Highway 1685C
CountyComanche County
StateOklahoma
Coordinates34.69603, -98.79864
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length102 ft (31.1 m)
Longest span34 ft (10.4 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic40 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-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$514,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 1685C over Big Sandy Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is 1685C over Big 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 August 2023.

How much traffic does 1685C over Big Sandy Creek carry?

About 25 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 1685C over Big Sandy Creek?

The structure is 102 ft (31.1 m) long with a longest span of 34 ft (10.4 m) and a deck 27 ft wide.

Who owns 1685C over Big Sandy Creek?

It is owned by the County Highway Agency.