Structure 874477 · Miami-Dade County, FL

Venetian Causeway over Biscayne Bay

Carries Venetian Causeway over Biscayne Bay, 2.3 Miles East Of Us-1.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT155 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 6/9

155 ft end to end, longest span 55 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.

Built192799 years old
Length154.5 ft47.1 m
Daily traffic8,323counted 2024
Last inspectedNovember 2023every 24 months

Location

StateFlorida
CountyMiami-Dade
Location2.3 Miles East Of Us-1
CarriesVenetian Causeway
CrossesBiscayne Bay
Coordinates25.79133, -80.15061

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length154.5 ft (47.1 m)
Max Span55.4 ft (16.9 m)
Deck Width41.7 ft (12.7 m)
Deck Area598.2 sq m
Main Spans3
Year Built1927

Traffic

Avg Daily Traffic8,323 (2024)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number874477

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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