US Bridges

I75 736671J over Southern RR & Branch

Good

Hamilton County, Tennessee · 7 MI South of SR2 · Structure no. 33I00750061

Built
2004
21 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
493 ft
4 main spans
Daily traffic
93,239
2021 count
Owner
State
State Highway Agency

About this bridge

I75 736671J over Southern RR & Branch is a steel continuous stringer/multi-beam or girder carrying I75 736671J over Southern RR & Branch in Hamilton County, Tennessee. It was built in 2004, so it is 21 years old, younger than the Tennessee average of 47.4 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 93,239 vehicles a day, roughly 6% of them trucks, projected to reach 133,040 by 2040. The structure is 493 ft (150.4 m) long and 144 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI75 736671J
CrossesSouthern RR & Branch
Location7 MI South of SR2
RouteInterstate 75
Coordinates35.06968, -85.1194
Functional classUrban Principal Arterial - Interstate

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 inspectionJuly 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length493 ft (150.4 m)
Longest span134 ft (40.9 m)
Deck width144 ft (43.9 m)
Roadway width140 ft (42.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93,239 (2021)
Projected traffic133,040 by 2040
Trucks6%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I75 736671J over Southern RR & Branch built?

It was built in 2004, making it 21 years old in 2025.

What condition is I75 736671J over Southern RR & Branch 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 July 2024.

How much traffic does I75 736671J over Southern RR & Branch carry?

About 93,239 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I75 736671J over Southern RR & Branch?

The structure is 493 ft (150.4 m) long with a longest span of 134 ft (40.9 m) and a deck 144 ft wide.

Who owns I75 736671J over Southern RR & Branch?

It is owned by the State Highway Agency.