Thousand Islands Bridge Hill Island in Canada. Thousand Islands International Bridge system is a series of five bridges that span parts of the St. Lawrence River, ultimately connecting both banks. The southern end of the bridge connects with Interstate 81 and the northern end of the bridge connects to Highway 401 via Highway 137. There is also an interchange with the Thousand Islands Parkway on the Ontario side. The bridge suffered aerodynamic-related structural problems (oscillations) shortly after its opening, these were quickly corrected via structural upgrades. The bridge system is administered by the Thousand Islands Bridge Authority, a New York State public benefit
Thousand Islands (Cocoa Beach) Several areas of the Thousand Islands were filled but not fully developed, leaving large areas of uplands. During the late 1960s Brevard County Mosquito Control began dredging the Thousand Islands south of Minutemen Causeway, resulting in conversion of salt marsh to upland dredge spoil with the state-owned C-34 impoundment. Native wetlands are dominated by red, black, and white mangroves. Succulent marsh contains saltwort, annual glasswort, perennial glasswort, sea blight, and shoreline seapurslane. The transition zone between salt marsh and upland is dominated by bushy seaside oxeye ("Borrichia frutescens" (L.) DC.) and buttonwood ("Conocarpus erectus" L.). Transition areas dominated by graminoid