US Bridges

CR 2321 over Gainer Bayou

Fair

Bay County, Florida · 1.0 Miles East of SR 77 · Structure no. 464004

Built
1957
68 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
74 ft
3 main spans
Daily traffic
9,500
2022 count
Owner
County
County Highway Agency

About this bridge

CR 2321 over Gainer Bayou is a concrete slab carrying CR 2321 over Gainer Bayou in Bay County, Florida. It was built in 1957, so it is 68 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.

It carries about 9,500 vehicles a day, roughly 9% of them trucks, projected to reach 10,450 by 2042. The structure is 74 ft (22.7 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCR 2321
CrossesGainer Bayou
Location1.0 Miles East of SR 77
RouteCounty Highway 2321
CountyBay County
StateFlorida
Coordinates30.28567, -85.61983
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.9 US tons
Inventory rating33.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length74 ft (22.7 m)
Longest span25 ft (7.6 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2022)
Projected traffic10,450 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 2321 over Gainer Bayou built?

It was built in 1957, making it 68 years old in 2025.

What condition is CR 2321 over Gainer 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 CR 2321 over Gainer Bayou carry?

About 9,500 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is CR 2321 over Gainer Bayou?

The structure is 74 ft (22.7 m) long with a longest span of 25 ft (7.6 m) and a deck 34 ft wide.

Who owns CR 2321 over Gainer Bayou?

It is owned by the County Highway Agency.