US Bridges

US-19 (SR-55) over Alligator Creek

Fair

Pinellas County, Florida · 0.9 Mile North of SR-60 · Structure no. 150033

Built
1948
77 years old, rebuilt 1982
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
42 ft
4 main spans
Daily traffic
117,000
2024 count
Owner
State
State Highway Agency

About this bridge

US-19 (SR-55) over Alligator Creek is a concrete culvert carrying US-19 (SR-55) over Alligator Creek in Pinellas County, Florida. It was built in 1948 and reconstructed in 1982, so it is 77 years old, older than the Florida average of 41.3 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 117,000 vehicles a day, roughly 4% of them trucks, projected to reach 146,250 by 2044. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS-19 (SR-55)
CrossesAlligator Creek
Location0.9 Mile North of SR-60
RouteU.S. Route 19
StateFlorida
Coordinates27.97315, -82.72977
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating49.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length42 ft (12.8 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic117,000 (2024)
Projected traffic146,250 by 2044
Trucks4%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-19 (SR-55) over Alligator Creek built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1982.

What condition is US-19 (SR-55) over Alligator Creek 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 March 2024.

How much traffic does US-19 (SR-55) over Alligator Creek carry?

About 117,000 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is US-19 (SR-55) over Alligator Creek?

The structure is 42 ft (12.8 m) long with a longest span of 10 ft (3.1 m).

Who owns US-19 (SR-55) over Alligator Creek?

It is owned by the State Highway Agency.