US SB3701

Establishes a competitive grant program for public transportation system operators to fund maintenance, replacement, and rehabilitation of commuter rail bridges

Authorizes $1.5 billion annually for fiscal years 2027 through 2031, totaling $7.5 billion over five years

Eligible bridges include those used for commuter rail that may also serve intercity passenger rail, other public transit, or roadways

Requires operators seeking grants for bridges they do not own to establish access agreements with bridge owners before receiving funding

Grant awards must consider commuter rail system size, available funding under existing programs, bridge age and condition, and whether replacement is identified as a priority in the applicant's transit asset management plan