US Bridges

West 29th Street over Sunset Lake Canal

Fair

Miami-Dade County, Florida · 0.2 Mile W of Alton Road · Structure no. 876710

Built
1926
99 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
2,289
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

West 29th Street over Sunset Lake Canal is a concrete continuous tee beam carrying West 29th Street over Sunset Lake Canal in Miami-Dade County, Florida. It was built in 1926, so it is 99 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 2,289 vehicles a day, roughly 1% of them trucks, projected to reach 2,917 by 2042. The structure is 143 ft (43.5 m) long and 38 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesWest 29th Street
CrossesSunset Lake Canal
Location0.2 Mile W of Alton Road
RouteCity Street 0
StateFlorida
Coordinates25.80531, -80.14119
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.1 US tons
Inventory rating34.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.5 m)
Longest span50 ft (15.2 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,289 (2024)
Projected traffic2,917 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was West 29th Street over Sunset Lake Canal built?

It was built in 1926, making it 99 years old in 2025.

What condition is West 29th Street over Sunset Lake Canal 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 September 2024.

How much traffic does West 29th Street over Sunset Lake Canal carry?

About 2,289 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is West 29th Street over Sunset Lake Canal?

The structure is 143 ft (43.5 m) long with a longest span of 50 ft (15.2 m) and a deck 38 ft wide.

Who owns West 29th Street over Sunset Lake Canal?

It is owned by the City or Municipal Highway Agency.