US Bridges

I24 over Cannon Ave (nfa B631)

Fair

Hamilton County, Tennessee · .1 MI from SR27 · Structure no. 33I00240033

Built
1962
63 years old, rebuilt 1987
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
123 ft
3 main spans
Daily traffic
110,983
2021 count
Owner
State
State Highway Agency

About this bridge

I24 over Cannon Ave (nfa B631) is a prestressed concrete box beam or girders - multiple carrying I24 over Cannon Ave (nfa B631) in Hamilton County, Tennessee. It was built in 1962 and reconstructed in 1987, so it is 63 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 110,983 vehicles a day, roughly 7% of them trucks, projected to reach 192,304 by 2040. The structure is 123 ft (37.5 m) long and 138 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesI24
CrossesCannon Ave (nfa B631)
Location.1 MI from SR27
RouteInterstate 24
CountyHamilton County
StateTennessee
Coordinates35.02203, -85.2982
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length123 ft (37.5 m)
Longest span56 ft (17.1 m)
Deck width138 ft (42.1 m)
Roadway width134 ft (40.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110,983 (2021)
Projected traffic192,304 by 2040
Trucks7%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed123.7 mi (199 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$3.4 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I24 over Cannon Ave (nfa B631) built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1987.

What condition is I24 over Cannon Ave (nfa B631) 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 August 2024.

How much traffic does I24 over Cannon Ave (nfa B631) carry?

About 110,983 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I24 over Cannon Ave (nfa B631)?

The structure is 123 ft (37.5 m) long with a longest span of 56 ft (17.1 m) and a deck 138 ft wide.

Who owns I24 over Cannon Ave (nfa B631)?

It is owned by the State Highway Agency.