US Bridges

NW S River Drive over Palmer Lake

Fair

Miami-Dade County, Florida · 1500FT N of NW 33rd Ave. · Structure no. 874134

Built
1949
76 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
103 ft
3 main spans
Daily traffic
3,662
2024 count
Owner
County
County Highway Agency

About this bridge

NW S River Drive over Palmer Lake is a steel stringer/multi-beam or girder carrying NW S River Drive over Palmer Lake in Miami-Dade County, Florida. It was built in 1949, so it is 76 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 3,662 vehicles a day, roughly 2% of them trucks, projected to reach 5,841 by 2043. The structure is 103 ft (31.3 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNW S River Drive
CrossesPalmer Lake
Location1500FT N of NW 33rd Ave.
RouteCity Street 0
CountyMiami-Dade County
StateFlorida
Coordinates25.80003, -80.25178
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length103 ft (31.3 m)
Longest span50 ft (15.3 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,662 (2024)
Projected traffic5,841 by 2043
Trucks2%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was NW S River Drive over Palmer Lake built?

It was built in 1949, making it 76 years old in 2025.

What condition is NW S River Drive over Palmer Lake 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 August 2024.

How much traffic does NW S River Drive over Palmer Lake carry?

About 3,662 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is NW S River Drive over Palmer Lake?

The structure is 103 ft (31.3 m) long with a longest span of 50 ft (15.3 m) and a deck 29 ft wide.

Who owns NW S River Drive over Palmer Lake?

It is owned by the County Highway Agency.