US Bridges

I65 over I65 Ll / SR 129

Fair

Marshall County, Tennessee · At the JCT of I65&SR129 · Structure no. 59I00650012

Built
1964
61 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
30,471
2021 count
Owner
State
State Highway Agency

About this bridge

I65 over I65 Ll / SR 129 is a prestressed concrete continuous stringer/multi-beam or girder carrying I65 over I65 Ll / SR 129 in Marshall County, Tennessee. It was built in 1964, so it is 61 years old, older than the Tennessee average of 47.4 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 30,471 vehicles a day, roughly 7% of them trucks, projected to reach 43,856 by 2040. The structure is 143 ft (43.7 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesI65
CrossesI65 Ll / SR 129
LocationAt the JCT of I65&SR129
RouteInterstate 65
CountyMarshall County
StateTennessee
Coordinates35.37255, -86.88422
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 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 alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.7 m)
Longest span62 ft (18.9 m)
Deck width40 ft (12.3 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic30,471 (2021)
Projected traffic43,856 by 2040
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I65 over I65 Ll / SR 129 built?

It was built in 1964, making it 61 years old in 2025.

What condition is I65 over I65 Ll / SR 129 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 September 2024.

How much traffic does I65 over I65 Ll / SR 129 carry?

About 30,471 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I65 over I65 Ll / SR 129?

The structure is 143 ft (43.7 m) long with a longest span of 62 ft (18.9 m) and a deck 40 ft wide.

Who owns I65 over I65 Ll / SR 129?

It is owned by the State Highway Agency.