Based on the search results, the following bridges are closed:

• Bronx River Parkway approaching East 233rd Street
• Henry Hudson Bridge to northbound traffic
• Brooklyn Bridge, single-lane Brooklyn-bound
• Pearl Street ramp to Brooklyn Bridge
• Manhattan Bridge, single-lane at a time on lower and upper roadways
• Williamsburg Bridge, single-lane and double-lane
• Grand Concourse Bridge over Metro North Railroad Hudson Line, southbound exit ramp to 138 Street bridge

Its important to note that this information is current as of October 1, 2023, and closures may change over time. Additionally, there may be other closures that are not listed in the search results.