US Bridges

NW 77 Ave over Biscayne Canal C-8

Fair

Miami-Dade County, Florida · 0.3 MI N of NW 154th ST · Structure no. 870769

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Slab
Prestressed Concrete
Length
92 ft
3 main spans
Daily traffic
1,465
2023 count
Owner
State
State Highway Agency

About this bridge

NW 77 Ave over Biscayne Canal C-8 is a prestressed concrete slab carrying NW 77 Ave over Biscayne Canal C-8 in Miami-Dade County, Florida. It was built in 1971, so it is 54 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 1,465 vehicles a day, roughly 2% of them trucks, projected to reach 2,542 by 2042. The structure is 92 ft (27.9 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNW 77 Ave
CrossesBiscayne Canal C-8
Location0.3 MI N of NW 154th ST
RouteState Highway 826
CountyMiami-Dade County
StateFlorida
Coordinates25.91846, -80.32482
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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
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 alignment8: Equal to present desirable criteria
Operating rating67.7 US tons
Inventory rating40.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length92 ft (27.9 m)
Longest span31 ft (9.3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,465 (2023)
Projected traffic2,542 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 NW 77 Ave over Biscayne Canal C-8 built?

It was built in 1971, making it 54 years old in 2025.

What condition is NW 77 Ave over Biscayne Canal C-8 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 NW 77 Ave over Biscayne Canal C-8 carry?

About 1,465 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is NW 77 Ave over Biscayne Canal C-8?

The structure is 92 ft (27.9 m) long with a longest span of 31 ft (9.3 m) and a deck 34 ft wide.

Who owns NW 77 Ave over Biscayne Canal C-8?

It is owned by the State Highway Agency.