US Bridges

I55 NB over Nonconnah Creek

Fair

Shelby County, Tennessee · .5 MI S of I240 JCT · Structure no. 79I00550031

Built
1962
63 years old, rebuilt 2001
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
637 ft
6 main spans
Daily traffic
131,916
2021 count
Owner
State
State Highway Agency

About this bridge

I55 NB over Nonconnah Creek is a steel continuous stringer/multi-beam or girder carrying I55 NB over Nonconnah Creek in Shelby County, Tennessee. It was built in 1962 and reconstructed in 2001, 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 5 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 131,916 vehicles a day, roughly 8% of them trucks, projected to reach 211,066 by 2042. The structure is 637 ft (194.3 m) long and 86 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI55 NB
CrossesNonconnah Creek
Location.5 MI S of I240 JCT
RouteInterstate 55
Coordinates35.06533, -90.02419
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating41.4 US tons
Inventory rating32.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length637 ft (194.3 m)
Longest span141 ft (43.1 m)
Deck width86 ft (26.2 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic131,916 (2021)
Projected traffic211,066 by 2042
Trucks8%
Lanes on structure4
Traffic directionOne-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I55 NB over Nonconnah Creek built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2001.

What condition is I55 NB over Nonconnah Creek 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 October 2024.

How much traffic does I55 NB over Nonconnah Creek carry?

About 131,916 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is I55 NB over Nonconnah Creek?

The structure is 637 ft (194.3 m) long with a longest span of 141 ft (43.1 m) and a deck 86 ft wide.

Who owns I55 NB over Nonconnah Creek?

It is owned by the State Highway Agency.