St. Lucie County Bridge Report Card

St. Lucie County scores 92 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A92 / 100

Local infrastructure snapshot

St. Lucie County, Florida

St. Lucie County has 150 bridges in the National Bridge Inventory, with 4 rated poor and 2 rated scour-critical. Its poor-condition share of 2.7% is at or below the 2.8% statewide average. Poor-condition bridges carry about 14,700 daily vehicle crossings.

150Total Bridges

4Poor (2.7%)

37Fair (24.7%)

2Scour-Critical

Quote-Ready Local Facts

2.7%of county bridges are in poor condition, compared with 2.8% statewide and 6.7% nationally.

14,700daily vehicle crossings are on poor-condition bridges in the county.

2bridges are rated scour-critical, or 1.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives St. Lucie County a Bridge Condition Exposure Score of 92/100 (A). The county has 150 bridges in the National Bridge Inventory, including 4 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 14,700 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	2.7%	5.3
Poor-condition traffic exposure	25	0.6% of measured traffic	0.5
Scour-critical bridge share	20	1.3%	2.7
Average age vs national baseline	10	44 years vs 48 nationally	0.0
Traffic-data completeness	5	2,428,372 measured daily crossings	0.0

Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.

County Comparisons

County Poor-Condition Share	2.7%
State Poor-Condition Share	2.8%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.3%
Average Bridge Age	44 years
Poor-Condition Traffic Exposure	14,700 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSr-a1a over Intracoastal Waterway — 7,100 vehicles/day Oldest Listed BridgeNorth 2nd Street over Moores Creek — built in 1925 All County BridgesBrowse every bridge record in St. Lucie County.

Top Bridges to Watch in St. Lucie County

Bridge	Reason	Condition	Daily Traffic	Year Built
Sr-a1a over Intracoastal Waterway	Poor condition + traffic exposure	Poor	7,100	1963
Sr-a1a (ocean Dr.) over Big Mud Creek	Poor condition + traffic exposure	Poor	3,800	1965
Sr-a1a (ocean Dr.) over Blind Creek	Poor condition + traffic exposure	Poor	3,800	1965
Cr605 Old Dixie Hw over Taylor Creek	Poor condition	Poor	0	1962
Us-1 (sr-5) SB over Howard Creek	Scour-critical foundation rating	Good	26,250	1936
Port St. Lucie Bld over Sr-91 (florida Turnpike)	High traffic	Good	50,000	1995
SB I-95 (sr-9) over Gatlin BLVD	High traffic	Fair	49,750	1982
NB I-95 (sr-9) over Gatlin BLVD	High traffic	Good	49,750	1982
SB I-95 (sr-9) over SW Cadima ST & C24 Canal	High traffic	Good	49,750	1982
NB I-95 (sr-9) over Galiano RD & C-24 Canal	High traffic	Good	49,750	1982

Important safety note

Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.