US Bridges

SR 59 over Intracoastal Canal

Fair

Baldwin County, Alabama · 1.9 MI N SR 182 · Structure no. 011551

Built
1972
53 years old, rebuilt 1976
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,762 ft
13 main spans
Daily traffic
46,741
2023 count
Owner
State
State Highway Agency

About this bridge

SR 59 over Intracoastal Canal is a steel continuous stringer/multi-beam or girder carrying SR 59 over Intracoastal Canal in Baldwin County, Alabama. It was built in 1972 and reconstructed in 1976, so it is 53 years old, older 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 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 46,741 vehicles a day, roughly 4% of them trucks, projected to reach 60,707 by 2043. The structure is 1,762 ft (537.1 m) long and 85 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesSR 59
CrossesIntracoastal Canal
Location1.9 MI N SR 182
RouteState Highway 59
StateAlabama
Coordinates30.27703, -87.68681
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20
Structure length1,762 ft (537.1 m)
Longest span180 ft (54.9 m)
Deck width85 ft (25.8 m)
Roadway width81 ft (24.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,741 (2023)
Projected traffic60,707 by 2043
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$34 million (2025 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 59 over Intracoastal Canal built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1976.

What condition is SR 59 over Intracoastal Canal 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 January 2025.

How much traffic does SR 59 over Intracoastal Canal carry?

About 46,741 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 59 over Intracoastal Canal?

The structure is 1,762 ft (537.1 m) long with a longest span of 180 ft (54.9 m) and a deck 85 ft wide.

Who owns SR 59 over Intracoastal Canal?

It is owned by the State Highway Agency.