US Bridges

CR 166 over Alligator Creek

Fair

Washington County, Florida · 1.29MI North of US 90 · Structure no. 614145

Built
2008
17 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
150 ft
5 main spans
Daily traffic
650
2023 count
Owner
County
County Highway Agency

About this bridge

CR 166 over Alligator Creek is a concrete continuous slab carrying CR 166 over Alligator Creek in Washington County, Florida. It was built in 2008, so it is 17 years old, younger 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 650 vehicles a day, roughly 7% of them trucks, projected to reach 1,128 by 2043. The structure is 150 ft (45.7 m) long and 43 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesCR 166
CrossesAlligator Creek
Location1.29MI North of US 90
RouteCounty Highway 166
StateFlorida
Coordinates30.7915, -85.56281
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating75.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2023)
Projected traffic1,128 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 166 over Alligator Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is CR 166 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 October 2024.

How much traffic does CR 166 over Alligator Creek carry?

About 650 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is CR 166 over Alligator Creek?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns CR 166 over Alligator Creek?

It is owned by the County Highway Agency.