US Bridges

Liberty Avenue over Fanning Bayou

FairPosted for load

Bay County, Florida · 0.4 Miles West of SR 77 · Structure no. 464505

Built
1980
45 years old
Condition
Fair
inspected December 2023
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
2,300
2023 count
Owner
County
County Highway Agency

About this bridge

Liberty Avenue over Fanning Bayou is a prestressed concrete slab carrying Liberty Avenue over Fanning Bayou in Bay County, Florida. It was built in 1980, so it is 45 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 5 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 2,300 vehicles a day, roughly 9% of them trucks, projected to reach 2,530 by 2043. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLiberty Avenue
CrossesFanning Bayou
Location0.4 Miles West of SR 77
RouteCounty Highway 2321
CountyBay County
StateFlorida
Coordinates30.288, -85.64408
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating15.1 US tons
Inventory rating11.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2023)
Projected traffic2,530 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Liberty Avenue over Fanning Bayou built?

It was built in 1980, making it 45 years old in 2025.

What condition is Liberty Avenue over Fanning Bayou 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 Liberty Avenue over Fanning Bayou carry?

About 2,300 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Liberty Avenue over Fanning Bayou?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Liberty Avenue over Fanning Bayou?

It is owned by the County Highway Agency.