US Bridges

Tyndall County Lin over Farmdale Bayou

FairPosted for load

Bay County, Florida · 1.5 Miles West of Tyndall · Structure no. AFFLXLWU18169

Built
1950
75 years old, rebuilt 2008
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
4 main spans
Daily traffic
4
2024 count
Owner
Federal
Air Force

About this bridge

Tyndall County Lin over Farmdale Bayou is a steel stringer/multi-beam or girder carrying Tyndall County Lin over Farmdale Bayou in Bay County, Florida. It was built in 1950 and reconstructed in 2008, so it is 75 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 4 vehicles a day, projected to reach 8 by 2044. The structure is 38 ft (11.6 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesTyndall County Lin
CrossesFarmdale Bayou
Location1.5 Miles West of Tyndall
RouteFederal Lands Road 0
CountyBay County
StateFlorida
Coordinates30.00511, -85.47325
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans4
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span10 ft (3.1 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4 (2024)
Projected traffic8 by 2044
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerAir Force
Maintained byAir Force
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 Tyndall County Lin over Farmdale Bayou built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2008.

What condition is Tyndall County Lin over Farmdale 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 January 2024.

How much traffic does Tyndall County Lin over Farmdale Bayou carry?

About 4 vehicles per day (2024 count).

How long is Tyndall County Lin over Farmdale Bayou?

The structure is 38 ft (11.6 m) long with a longest span of 10 ft (3.1 m) and a deck 16 ft wide.

Who owns Tyndall County Lin over Farmdale Bayou?

It is owned by the Air Force.