US Bridges

CO 27 over St. Florian Branch

PoorPosted for load

Lauderdale County, Alabama · 1.5 MI N Int US 72 · Structure no. 001571

Built
1937
88 years old
Condition
Poor
inspected March 2024
Type
Tee Beam
Concrete
Length
121 ft
4 main spans
Daily traffic
500
1987 count
Owner
County
County Highway Agency

About this bridge

CO 27 over St. Florian Branch is a concrete tee beam carrying CO 27 over St. Florian Branch in Lauderdale County, Alabama. It was built in 1937, so it is 88 years old, older than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, roughly 10% of them trucks, projected to reach 1,000 by 2031. The structure is 121 ft (36.9 m) long and 23 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCO 27
CrossesSt. Florian Branch
Location1.5 MI N Int US 72
RouteCounty Highway 27
StateAlabama
Coordinates34.86598, -87.58527
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating7.1 US tons
Inventory rating5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length121 ft (36.9 m)
Longest span30 ft (9.1 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (1987)
Projected traffic1,000 by 2031
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$801,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO 27 over St. Florian Branch built?

It was built in 1937, making it 88 years old in 2025.

What condition is CO 27 over St. Florian Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does CO 27 over St. Florian Branch carry?

About 500 vehicles per day (1987 count), of which roughly 10% are trucks.

How long is CO 27 over St. Florian Branch?

The structure is 121 ft (36.9 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns CO 27 over St. Florian Branch?

It is owned by the County Highway Agency.