US Bridges

I 20/I 59 over Toomsuba Ck Channel

Fair

Lauderdale County, Mississippi · 8.5 MI N US 45 · Structure no. 11000590381655A

Built
1960
65 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
329 ft
8 main spans
Daily traffic
13,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 20/I 59 over Toomsuba Ck Channel is a prestressed concrete stringer/multi-beam or girder carrying I 20/I 59 over Toomsuba Ck Channel in Lauderdale County, Mississippi. It was built in 1960, so it is 65 years old, older than the Mississippi average of 38.9 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 13,000 vehicles a day, roughly 43% of them trucks, projected to reach 13,000 by 2043. The structure is 329 ft (100.3 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 20/I 59
CrossesToomsuba Ck Channel
Location8.5 MI N US 45
RouteInterstate 59
CountyLauderdale County
StateMississippi
Coordinates32.41327, -88.49276
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length329 ft (100.3 m)
Longest span41 ft (12.5 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2023)
Projected traffic13,000 by 2043
Trucks43%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$443 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I 20/I 59 over Toomsuba Ck Channel built?

It was built in 1960, making it 65 years old in 2025.

What condition is I 20/I 59 over Toomsuba Ck Channel 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 I 20/I 59 over Toomsuba Ck Channel carry?

About 13,000 vehicles per day (2023 count), of which roughly 43% are trucks.

How long is I 20/I 59 over Toomsuba Ck Channel?

The structure is 329 ft (100.3 m) long with a longest span of 41 ft (12.5 m) and a deck 33 ft wide.

Who owns I 20/I 59 over Toomsuba Ck Channel?

It is owned by the State Highway Agency.