US Bridges

West Mashta Drive. over Biscayne Bay Canal

Good

Miami-Dade County, Florida · 0.1MI S/O Harbor Drive · Structure no. 878400

Built
1998
27 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
45 ft
1 main span
Daily traffic
525
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Mashta Drive. over Biscayne Bay Canal is a concrete culvert carrying West Mashta Drive. over Biscayne Bay Canal in Miami-Dade County, Florida. It was built in 1998, so it is 27 years old, younger 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 525 vehicles a day, roughly 1% of them trucks, projected to reach 800 by 2042. The structure is 45 ft (13.7 m) long and 49 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesWest Mashta Drive.
CrossesBiscayne Bay Canal
Location0.1MI S/O Harbor Drive
RouteCity Street 0
StateFlorida
Coordinates25.68461, -80.17097
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.3 US tons
Inventory rating38 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span45 ft (13.7 m)
Deck width49 ft (14.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2024)
Projected traffic800 by 2042
Trucks1%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 West Mashta Drive. over Biscayne Bay Canal built?

It was built in 1998, making it 27 years old in 2025.

What condition is West Mashta Drive. over Biscayne Bay Canal 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 August 2024.

How much traffic does West Mashta Drive. over Biscayne Bay Canal carry?

About 525 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is West Mashta Drive. over Biscayne Bay Canal?

The structure is 45 ft (13.7 m) long with a longest span of 45 ft (13.7 m) and a deck 49 ft wide.

Who owns West Mashta Drive. over Biscayne Bay Canal?

It is owned by the City or Municipal Highway Agency.