US Bridges

Watson Road over Bogie Channel

Fair

Monroe County, Florida · 3.5 MI E of SR 5(MM 30.5) · Structure no. 904320

Built
1967
58 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
2,238 ft
45 main spans
Daily traffic
1,300
2020 count
Owner
County
County Highway Agency

About this bridge

Watson Road over Bogie Channel is a prestressed concrete stringer/multi-beam or girder carrying Watson Road over Bogie Channel in Monroe County, Florida. It was built in 1967, so it is 58 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 1,300 vehicles a day, roughly 19% of them trucks, projected to reach 1,450 by 2042. The structure is 2,238 ft (682.1 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesWatson Road
CrossesBogie Channel
Location3.5 MI E of SR 5(MM 30.5)
RouteCounty Highway 0
CountyMonroe County
StateFlorida
Coordinates24.69794, -81.34497
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.7 US tons
Inventory rating16.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans45
Design loadHS 20
Structure length2,238 ft (682.1 m)
Longest span60 ft (18.3 m)
Deck width34 ft (10.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2020)
Projected traffic1,450 by 2042
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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$5 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Watson Road over Bogie Channel built?

It was built in 1967, making it 58 years old in 2025.

What condition is Watson Road over Bogie Channel 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 2023.

How much traffic does Watson Road over Bogie Channel carry?

About 1,300 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is Watson Road over Bogie Channel?

The structure is 2,238 ft (682.1 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.

Who owns Watson Road over Bogie Channel?

It is owned by the County Highway Agency.