US Bridges

1664C over Nine Mile Creek

Fair

Comanche County, Oklahoma · 2.1S&2.5E of JCT I44&SH7 · Structure no. 190420000000000

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
289
2022 count
Owner
County
County Highway Agency

About this bridge

1664C over Nine Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying 1664C over Nine Mile Creek in Comanche County, Oklahoma. It was built in 1975, so it is 50 years old, older 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 289 vehicles a day, roughly 15% of them trucks, projected to reach 462 by 2042. The structure is 122 ft (37.2 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries1664C
CrossesNine Mile Creek
Location2.1S&2.5E of JCT I44&SH7
RouteCounty Highway 1664C
Coordinates34.56527, -98.33477
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic289 (2022)
Projected traffic462 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$565,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 1664C over Nine Mile Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is 1664C over Nine Mile 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 1664C over Nine Mile Creek carry?

About 289 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 1664C over Nine Mile Creek?

The structure is 122 ft (37.2 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns 1664C over Nine Mile Creek?

It is owned by the County Highway Agency.