Structure 904153 · Monroe County, FL

Cr939 Sugarloaf B. over Un-named Channel

Carries Cr939 Sugarloaf B. over Un-named Channel, 0.8 Mile E Of Us-1 Mm 17.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure6/9 · Satisfactory
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT123 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 6/9Substructure 5/9

123 ft end to end, longest span 41 ft. 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 multi-beam bridge.

Built196165 years old
Length123.0 ft37.5 m
Daily traffic592counted 2024
Last inspectedDecember 2023every 24 months

Location

StateFlorida
CountyMonroe
Location0.8 Mile E Of Us-1 Mm 17
CarriesCr939 Sugarloaf B.
CrossesUn-named Channel
Coordinates24.63831, -81.55539

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length123.0 ft (37.5 m)
Max Span41.0 ft (12.5 m)
Deck Width25.6 ft (7.8 m)
Deck Area292.5 sq m
Main Spans3
Year Built1961

Traffic

Avg Daily Traffic592 (2024)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number904153

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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