US Bridges

I75 over Branch

Poor

Hamilton County, Tennessee · SR-153 Junction · Structure no. 33I00750029

Built
1959
66 years old
Condition
Poor
inspected July 2024
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
110,093
2021 count
Owner
State
State Highway Agency

About this bridge

I75 over Branch is a concrete continuous culvert carrying I75 over Branch in Hamilton County, Tennessee. It was built in 1959, so it is 66 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 110,093 vehicles a day, roughly 6% of them trucks, projected to reach 176,149 by 2042. The structure is 35 ft (10.7 m) long and 1,235 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI75
CrossesBranch
LocationSR-153 Junction
RouteInterstate 75
CountyHamilton County
StateTennessee
Coordinates35.02475, -85.17305
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span8 ft (2.4 m)
Deck width1,235 ft (376.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110,093 (2021)
Projected traffic176,149 by 2042
Trucks6%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I75 over Branch built?

It was built in 1959, making it 66 years old in 2025.

What condition is I75 over Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does I75 over Branch carry?

About 110,093 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I75 over Branch?

The structure is 35 ft (10.7 m) long with a longest span of 8 ft (2.4 m) and a deck 1,235 ft wide.

Who owns I75 over Branch?

It is owned by the State Highway Agency.