US Bridges

I 565 over Limestone Slough

Fair

Limestone County, Alabama · 2.9 MI E JCT I 565 & I 65 · Structure no. 014147

Built
1987
38 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
164 ft
4 main spans
Daily traffic
646
2023 count
Owner
State
State Highway Agency

About this bridge

I 565 over Limestone Slough is a prestressed concrete continuous stringer/multi-beam or girder carrying I 565 over Limestone Slough in Limestone County, Alabama. It was built in 1987, so it is 38 years old, younger than the Alabama average of 51.1 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 646 vehicles a day, roughly 2% of them trucks, projected to reach 1,089 by 2035. The structure is 164 ft (50 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 565
CrossesLimestone Slough
Location2.9 MI E JCT I 565 & I 65
RouteInterstate 565
CountyLimestone County
StateAlabama
Coordinates34.63522, -86.86039
Functional classUrban Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.9 US tons
Inventory rating39.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length164 ft (50 m)
Longest span41 ft (12.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic646 (2023)
Projected traffic1,089 by 2035
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
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 proposedNone recorded
Estimated improvement cost$1.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 565 over Limestone Slough built?

It was built in 1987, making it 38 years old in 2025.

What condition is I 565 over Limestone Slough 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 February 2025.

How much traffic does I 565 over Limestone Slough carry?

About 646 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is I 565 over Limestone Slough?

The structure is 164 ft (50 m) long with a longest span of 41 ft (12.5 m) and a deck 31 ft wide.

Who owns I 565 over Limestone Slough?

It is owned by the State Highway Agency.