US Bridges

Watson Blvd over Un-Named Channel

Good

Monroe County, Florida · 0.5MI. N of Key Deer Blvd · Structure no. 904310

Built
1965
60 years old, rebuilt 2013
Condition
Good
inspected November 2023
Type
Slab
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
2,060
2013 count
Owner
County
County Highway Agency

About this bridge

Watson Blvd over Un-Named Channel is a prestressed concrete slab carrying Watson Blvd over Un-Named Channel in Monroe County, Florida. It was built in 1965 and reconstructed in 2013, so it is 60 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,060 vehicles a day, roughly 2% of them trucks, projected to reach 3,574 by 2035. The structure is 29 ft (8.7 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesWatson Blvd
CrossesUn-Named Channel
Location0.5MI. N of Key Deer Blvd
RouteCounty Highway 0
CountyMonroe County
StateFlorida
Coordinates24.69158, -81.35769
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.1 US tons
Inventory rating39.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length29 ft (8.7 m)
Longest span29 ft (8.7 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,060 (2013)
Projected traffic3,574 by 2035
Trucks2%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$871,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Watson Blvd over Un-Named Channel built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2013.

What condition is Watson Blvd over Un-Named Channel in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Watson Blvd over Un-Named Channel carry?

About 2,060 vehicles per day (2013 count), of which roughly 2% are trucks.

How long is Watson Blvd over Un-Named Channel?

The structure is 29 ft (8.7 m) long with a longest span of 29 ft (8.7 m) and a deck 32 ft wide.

Who owns Watson Blvd over Un-Named Channel?

It is owned by the County Highway Agency.