US Bridges

NW 34th Avenue over Comfort Canal

Good

Miami-Dade County, Florida · 450FT. S of NW 14th St. · Structure no. 876420

Built
2020
5 years old
Condition
Good
inspected April 2024
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
2,497
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

NW 34th Avenue over Comfort Canal is a prestressed concrete slab carrying NW 34th Avenue over Comfort Canal in Miami-Dade County, Florida. It was built in 2020, so it is 5 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 2,497 vehicles a day, roughly 5% of them trucks, projected to reach 2,920 by 2042. The structure is 40 ft (12.2 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNW 34th Avenue
CrossesComfort Canal
Location450FT. S of NW 14th St.
RouteCity Street 0
CountyMiami-Dade County
StateFlorida
Coordinates25.78616, -80.25138
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.5 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width49 ft (14.8 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,497 (2022)
Projected traffic2,920 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 NW 34th Avenue over Comfort Canal built?

It was built in 2020, making it 5 years old in 2025.

What condition is NW 34th Avenue over Comfort 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 April 2024.

How much traffic does NW 34th Avenue over Comfort Canal carry?

About 2,497 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is NW 34th Avenue over Comfort Canal?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 49 ft wide.

Who owns NW 34th Avenue over Comfort Canal?

It is owned by the City or Municipal Highway Agency.