US Bridges

SW 77th Avenue over Canal C-100-A

Fair

Miami-Dade County, Florida · 0.2 Mile N of SW 152nd ST · Structure no. 874422

Built
1966
59 years old
Condition
Fair
inspected February 2024
Type
Slab
Prestressed Concrete
Length
65 ft
3 main spans
Daily traffic
7,400
2020 count
Owner
County
County Highway Agency

About this bridge

SW 77th Avenue over Canal C-100-A is a prestressed concrete slab carrying SW 77th Avenue over Canal C-100-A in Miami-Dade County, Florida. It was built in 1966, so it is 59 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 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 7,400 vehicles a day, roughly 2% of them trucks, projected to reach 14,370 by 2042. The structure is 65 ft (19.8 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSW 77th Avenue
CrossesCanal C-100-A
Location0.2 Mile N of SW 152nd ST
RouteCounty Highway 0
StateFlorida
Coordinates25.63319, -80.31739
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating85.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span26 ft (8 m)
Deck width38 ft (11.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,400 (2020)
Projected traffic14,370 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 77th Avenue over Canal C-100-A built?

It was built in 1966, making it 59 years old in 2025.

What condition is SW 77th Avenue over Canal C-100-A 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 February 2024.

How much traffic does SW 77th Avenue over Canal C-100-A carry?

About 7,400 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is SW 77th Avenue over Canal C-100-A?

The structure is 65 ft (19.8 m) long with a longest span of 26 ft (8 m) and a deck 38 ft wide.

Who owns SW 77th Avenue over Canal C-100-A?

It is owned by the County Highway Agency.