US Bridges

NW 86th Blvd. over Alligator Creek

FairPosted for load

Hamilton County, Florida · 2 MI South of CR 150 · Structure no. 324206

Built
1963
62 years old, rebuilt 1984
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
33 ft
2 main spans
Daily traffic
41
2023 count
Owner
County
County Highway Agency

About this bridge

NW 86th Blvd. over Alligator Creek is a wood or timber stringer/multi-beam or girder carrying NW 86th Blvd. over Alligator Creek in Hamilton County, Florida. It was built in 1963 and reconstructed in 1984, so it is 62 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. Its operating status is: posted for load restriction.

It carries about 41 vehicles a day, projected to reach 71 by 2042. The structure is 33 ft (10.2 m) long and 14 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNW 86th Blvd.
CrossesAlligator Creek
Location2 MI South of CR 150
RouteCounty Highway 0
CountyHamilton County
StateFlorida
Coordinates30.56806, -83.01586
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.8 US tons
Inventory rating15.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span19 ft (5.9 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2023)
Projected traffic71 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 NW 86th Blvd. over Alligator Creek built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1984.

What condition is NW 86th Blvd. 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 NW 86th Blvd. over Alligator Creek carry?

About 41 vehicles per day (2023 count).

How long is NW 86th Blvd. over Alligator Creek?

The structure is 33 ft (10.2 m) long with a longest span of 19 ft (5.9 m) and a deck 14 ft wide.

Who owns NW 86th Blvd. over Alligator Creek?

It is owned by the County Highway Agency.