US Bridges

Thach RD over I 65

Fair

Limestone County, Alabama · 4 MI S JCT I 65 & SR 53 · Structure no. 008571

Built
1965
60 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete Continuous
Length
283 ft
4 main spans
Daily traffic
921
2024 count
Owner
State
State Highway Agency

About this bridge

Thach RD over I 65 is a concrete continuous tee beam carrying Thach RD over I 65 in Limestone County, Alabama. It was built in 1965, so it is 60 years old, older than the Alabama average of 51.1 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 921 vehicles a day, roughly 10% of them trucks, projected to reach 1,810 by 2034. The structure is 283 ft (86.3 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesThach RD
CrossesI 65
Location4 MI S JCT I 65 & SR 53
RouteCounty Highway 88
CountyLimestone County
StateAlabama
Coordinates34.92014, -86.90639
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.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.4 US tons
Inventory rating25.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length283 ft (86.3 m)
Longest span78 ft (23.8 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic921 (2024)
Projected traffic1,810 by 2034
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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$2.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Thach RD over I 65 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Thach RD over I 65 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 March 2024.

How much traffic does Thach RD over I 65 carry?

About 921 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Thach RD over I 65?

The structure is 283 ft (86.3 m) long with a longest span of 78 ft (23.8 m) and a deck 33 ft wide.

Who owns Thach RD over I 65?

It is owned by the State Highway Agency.