US Bridges

NW 17th Avenue over Miami River

Fair

Miami-Dade County, Florida · 0.2 Mile North of SR 836 · Structure no. 874161

Built
1928
97 years old
Condition
Fair
inspected January 2024
Type
Movable - Bascule
Steel
Length
393 ft
1 main span
Daily traffic
21,073
2024 count
Owner
County
County Highway Agency

About this bridge

NW 17th Avenue over Miami River is a steel movable - bascule carrying NW 17th Avenue over Miami River in Miami-Dade County, Florida. It was built in 1928, so it is 97 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 21,073 vehicles a day, roughly 5% of them trucks, projected to reach 34,190 by 2042. The structure is 393 ft (119.8 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNW 17th Avenue
CrossesMiami River
Location0.2 Mile North of SR 836
RouteCity Street 0
CountyMiami-Dade County
StateFlorida
Coordinates25.78553, -80.22295
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.6 US tons
Inventory rating23.6 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckOpen grating
Main spans1 (+5 approach)
Design loadHS 20
Structure length393 ft (119.8 m)
Longest span133 ft (40.5 m)
Deck width60 ft (18.3 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,073 (2024)
Projected traffic34,190 by 2042
Trucks5%
Lanes on structure4
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

OwnerCounty Highway Agency
Maintained byCounty 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 NW 17th Avenue over Miami River built?

It was built in 1928, making it 97 years old in 2025.

What condition is NW 17th Avenue over Miami River 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 January 2024.

How much traffic does NW 17th Avenue over Miami River carry?

About 21,073 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is NW 17th Avenue over Miami River?

The structure is 393 ft (119.8 m) long with a longest span of 133 ft (40.5 m) and a deck 60 ft wide.

Who owns NW 17th Avenue over Miami River?

It is owned by the County Highway Agency.