US Bridges

Military Trail over Thompson River

Fair

Palm Beach County, Florida · 0.7 MI South of Pga Blvd. · Structure no. 934138

Built
1990
35 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
36,000
2024 count
Owner
State
State Highway Agency

About this bridge

Military Trail over Thompson River is a prestressed concrete slab carrying Military Trail over Thompson River in Palm Beach County, Florida. It was built in 1990, so it is 35 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 36,000 vehicles a day, roughly 3% of them trucks, projected to reach 62,460 by 2044. The structure is 34 ft (10.4 m) long and 109 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMilitary Trail
CrossesThompson River
Location0.7 MI South of Pga Blvd.
RouteState Highway 809
CountyPalm Beach County
StateFlorida
Coordinates26.82906, -80.10556
Functional classUrban Other Principal 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating32.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width109 ft (33.2 m)
Roadway width93 ft (28.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,000 (2024)
Projected traffic62,460 by 2044
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Military Trail over Thompson River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Military Trail over Thompson River 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 July 2024.

How much traffic does Military Trail over Thompson River carry?

About 36,000 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Military Trail over Thompson River?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 109 ft wide.

Who owns Military Trail over Thompson River?

It is owned by the State Highway Agency.