Structure 940121 · St. Lucie County, FL

Sr91 Tpk SB 143.3 over Sr-91 Tpk (st Lucie Int)

Carries Sr91 Tpk SB 143.3 over Sr-91 Tpk (st Lucie Int), 0.2 Mi N Of ST Lucie BLVD.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT224 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

224 ft end to end, longest span 79 ft: about 3 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 multi-beam bridge.

Built197551 years old
Length224.1 ft68.3 m
Daily traffic1,700counted 2022
Last inspectedDecember 2023every 24 months

Location

StateFlorida
CountySt. Lucie
Location0.2 Mi N Of ST Lucie BLVD
CarriesSr91 Tpk SB 143.3
CrossesSr-91 Tpk (st Lucie Int)
Coordinates27.27633, -80.36007

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length224.1 ft (68.3 m)
Max Span79.1 ft (24.1 m)
Deck Width46.9 ft (14.3 m)
Deck Area976.7 sq m
Main Spans4
Year Built1975

Traffic

Avg Daily Traffic1,700 (2022)
Truck Traffic20%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number940121

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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