US Bridges

FM 666 over Cayamon Creek Relief

Good

Nueces County, Texas · 1.20 MI N of FM 624 · Structure no. 161780105201042

Built
1988
37 years old
Condition
Good
inspected May 2024
Type
Other
Prestressed Concrete
Length
600 ft
12 main spans
Daily traffic
2,042
2022 count
Owner
State
State Highway Agency

About this bridge

FM 666 over Cayamon Creek Relief is a prestressed concrete other carrying FM 666 over Cayamon Creek Relief in Nueces County, Texas. It was built in 1988, so it is 37 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,042 vehicles a day, roughly 10% of them trucks, projected to reach 1,800 by 2033. The structure is 600 ft (182.9 m) long and 46 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

Open in Google Maps
CarriesFM 666
CrossesCayamon Creek Relief
Location1.20 MI N of FM 624
RouteState Highway 666
CountyNueces County
StateTexas
Coordinates27.91439, -97.77996
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeOther
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length600 ft (182.9 m)
Longest span50 ft (15.2 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,042 (2022)
Projected traffic1,800 by 2033
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed44.7 mi (72 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 FM 666 over Cayamon Creek Relief built?

It was built in 1988, making it 37 years old in 2025.

What condition is FM 666 over Cayamon Creek Relief in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does FM 666 over Cayamon Creek Relief carry?

About 2,042 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is FM 666 over Cayamon Creek Relief?

The structure is 600 ft (182.9 m) long with a longest span of 50 ft (15.2 m) and a deck 46 ft wide.

Who owns FM 666 over Cayamon Creek Relief?

It is owned by the State Highway Agency.