An enclosure consisting of a section of canal that can be closed to control the water level. It is used to raise or lower vessels that pass through it.
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America Scores a D+
The 2017 Infrastructure Report Card gives our nation a D+ across 16 infrastructure categories #InfrastructureMatters
Fix the Trust Fund
#FixTheTrustFund to put us on a road to better transportation! #InfrastructureMatters