Mainstream Diving Division
Emergency Response: 888-233-5338

TDOT Bridge Inspections

Mainstream has performed several hundred Level 1 and 2 underwater bridge inspections throughout the State of Tennessee for the Tennessee Department of Transportation including:

  • 42 Bridges in 2016
  • 44 Bridges in 2012
  • 12 Bridges in 2011
  • 47 Bridges in 2010
  • 36 Bridges in 2009
  • 41 Bridges in 2007
  • 74 Bridges in 2005
  • 35 Bridges in 2004
  • 71 Bridges in 2002
  • 54 Bridges in 2001
  • 73 Bridges in 2000

Additionally, MER Diving has performed Level III underwater inspections on various bridges throughout the State of Tennessee on an as-needed basis.


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