US Bridges

SR 59 over Little Lagoon

Fair

Baldwin County, Alabama · .4 MI N JCT SR 182 · Structure no. 011464

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
170 ft
5 main spans
Daily traffic
38,520
2021 count
Owner
State
State Highway Agency

About this bridge

SR 59 over Little Lagoon is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 59 over Little Lagoon in Baldwin County, Alabama. It was built in 1975, so it is 50 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 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 38,520 vehicles a day, roughly 6% of them trucks, projected to reach 57,780 by 2041. The structure is 170 ft (51.8 m) long and 64 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 59
CrossesLittle Lagoon
Location.4 MI N JCT SR 182
RouteState Highway 59
CountyBaldwin County
StateAlabama
Coordinates30.25469, -87.68881
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.5 US tons
Inventory rating47.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span34 ft (10.4 m)
Deck width64 ft (19.4 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,520 (2021)
Projected traffic57,780 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 59 over Little Lagoon built?

It was built in 1975, making it 50 years old in 2025.

What condition is SR 59 over Little Lagoon 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 December 2024.

How much traffic does SR 59 over Little Lagoon carry?

About 38,520 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR 59 over Little Lagoon?

The structure is 170 ft (51.8 m) long with a longest span of 34 ft (10.4 m) and a deck 64 ft wide.

Who owns SR 59 over Little Lagoon?

It is owned by the State Highway Agency.