US Bridges

CR 150 over Alligator Creek

Fair

Hamilton County, Florida · 0.4 MI West of US 129 · Structure no. 320026

Built
1959
66 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
300
2023 count
Owner
County
County Highway Agency

About this bridge

CR 150 over Alligator Creek is a prestressed concrete stringer/multi-beam or girder carrying CR 150 over Alligator Creek in Hamilton County, Florida. It was built in 1959, so it is 66 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 300 vehicles a day, roughly 25% of them trucks, projected to reach 521 by 2042. The structure is 120 ft (36.6 m) long and 31 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCR 150
CrossesAlligator Creek
Location0.4 MI West of US 129
RouteCounty Highway 150
CountyHamilton County
StateFlorida
Coordinates30.59639, -83.01806
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2023)
Projected traffic521 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 150 over Alligator Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is CR 150 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 December 2023.

How much traffic does CR 150 over Alligator Creek carry?

About 300 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is CR 150 over Alligator Creek?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns CR 150 over Alligator Creek?

It is owned by the County Highway Agency.