US Bridges

1680C over Creek

PoorPosted for load

Comanche County, Oklahoma · 1.9 MI N Chattanoona · Structure no. 084080000000000

Built
1940
85 years old
Condition
Poor
inspected August 2023
Type
Slab
Concrete
Length
36 ft
2 main spans
Daily traffic
195
2022 count
Owner
County
County Highway Agency

About this bridge

1680C over Creek is a concrete slab carrying 1680C over Creek in Comanche County, Oklahoma. It was built in 1940, so it is 85 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 195 vehicles a day, roughly 15% of them trucks, projected to reach 312 by 2042. The structure is 36 ft (11 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries1680C
CrossesCreek
Location1.9 MI N Chattanoona
RouteCounty Highway 1601
Coordinates34.45004, -98.64468
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27 US tons
Inventory rating16 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length36 ft (11 m)
Longest span16 ft (4.9 m)
Deck width34 ft (10.3 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195 (2022)
Projected traffic312 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$294,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 1680C over Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is 1680C over Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does 1680C over Creek carry?

About 195 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 1680C over Creek?

The structure is 36 ft (11 m) long with a longest span of 16 ft (4.9 m) and a deck 34 ft wide.

Who owns 1680C over Creek?

It is owned by the County Highway Agency.