US Bridges

US-221 (SR-55) over Alligator Creek

Fair

Madison County, Florida · 5.5 Mi. S. of I-10 · Structure no. 350013

Built
1971
54 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
57 ft
6 main spans
Daily traffic
1,100
2022 count
Owner
State
State Highway Agency

About this bridge

US-221 (SR-55) over Alligator Creek is a concrete culvert carrying US-221 (SR-55) over Alligator Creek in Madison County, Florida. It was built in 1971, so it is 54 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 1,100 vehicles a day, roughly 12% of them trucks, projected to reach 1,908 by 2044. The structure is 57 ft (17.4 m) long. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesUS-221 (SR-55)
CrossesAlligator Creek
Location5.5 Mi. S. of I-10
RouteU.S. Route 221
CountyMadison County
StateFlorida
Coordinates30.36444, -83.65729
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 rating56.2 US tons
Inventory rating33.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2022)
Projected traffic1,908 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

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-221 (SR-55) over Alligator Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is US-221 (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 April 2023.

How much traffic does US-221 (SR-55) over Alligator Creek carry?

About 1,100 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US-221 (SR-55) over Alligator Creek?

The structure is 57 ft (17.4 m) long with a longest span of 9 ft (2.7 m).

Who owns US-221 (SR-55) over Alligator Creek?

It is owned by the State Highway Agency.