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Main Park Road over Buttonwood Canal

Monroe County, Florida · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Main Park Road over Buttonwood Canal in Monroe County, Florida, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1957, making it 68 years old at the 2025 inventory.
It carries about 690 vehicles a day (traffic count year 2022).
It is one of 61 of the 98 inventoried bridges in Monroe County rated fair (62.2%); 5 (5.1%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 388 ft
Location	37.33 Miles From Park Ent
NBI structure number	5280002P0000000
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.

Bridge	Built	Vehicles/day	Condition
US 1 (SR 5) over Rockland Channel	1979	47,000	Good
US 1 (SR 5) over Salt Run	1992	38,500	Fair
US 1 (SR 5) over Naval Base Blvd	1988	27,500	Good
US 1 (SR 5) over Jewfish Creek	2008	26,500	Good
US 1 (NB & SB) over Manatee Creek	2008	26,500	Fair
US-1 (SR-5) over Vaca Cut	1982	25,000	Fair