US Bridges

Nfa A136 over I75

FairPosted for load

Anderson County, Tennessee · Just SE of SR61-I75 Exit · Structure no. 01I00750013

Built
1969
56 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
250 ft
4 main spans
Daily traffic
700
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A136 over I75 is a concrete continuous tee beam carrying Nfa A136 over I75 in Anderson County, Tennessee. It was built in 1969, so it is 56 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. Its operating status is: posted for load restriction.

It carries about 700 vehicles a day, roughly 2% of them trucks, projected to reach 1,120 by 2042. The structure is 250 ft (76.2 m) long and 32 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesNfa A136
CrossesI75
LocationJust SE of SR61-I75 Exit
RouteCounty Highway 136
CountyAnderson County
StateTennessee
Coordinates36.1581, -84.072
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating19.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length250 ft (76.2 m)
Longest span81 ft (24.8 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2020)
Projected traffic1,120 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

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 Nfa A136 over I75 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Nfa A136 over I75 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 July 2023.

How much traffic does Nfa A136 over I75 carry?

About 700 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A136 over I75?

The structure is 250 ft (76.2 m) long with a longest span of 81 ft (24.8 m) and a deck 32 ft wide.

Who owns Nfa A136 over I75?

It is owned by the State Highway Agency.