▁removal . ▁ ▁Board man ▁Dam ▁ ▁The ▁Board man ▁Dam ▁was ▁originally ▁built ▁in ▁ 1 8 9 4 , ▁and ▁re construct ed ▁in ▁ 1 9 3 0 . ▁It ▁and ▁the ▁large ▁ear then ▁dam ▁created ▁the ▁Ke yst one ▁P ond . ▁The ▁dam ▁was ▁demol ished ▁in ▁ 2 0 1 7 ▁and ▁Ke yst one ▁P ond ▁was ▁dra ined . ▁The ▁river ▁was ▁r er out ed ▁under ▁the ▁new ▁Cass ▁Road ▁Bridge . ▁ ▁Sab in ▁Dam ▁▁ ▁The ▁Sab in ▁Dam ▁was ▁built ▁in ▁ 1 9 0 2 , ▁ ▁up stream ▁from ▁the ▁Board man ▁Dam , ▁and ▁was ▁re built ▁in ▁ 1 9 3 0 . ▁This ▁dam ▁created ▁Sab in ▁P ond . ▁The ▁dam ▁was ▁demol ished ▁in ▁ 2 0 1 8 ▁and ▁Sab in ▁P ond ▁was ▁dra ined . ▁ ▁Union ▁Street ▁Dam ▁ ▁The ▁Union ▁Street ▁Dam ▁is ▁the ▁only ▁dam ▁on ▁the ▁Board man ▁that ▁is ▁not ▁part ▁of ▁the ▁removal ▁project . ▁It ▁s its ▁on ▁the ▁Board man ▁River ▁just ▁east ▁of ▁Union ▁Street ▁in ▁dow nt own ▁Tra verse ▁City , ▁hence ▁its ▁name . ▁ ▁Cass ▁Road ▁Bridge ▁ ▁In ▁the ▁years ▁leading ▁up ▁to ▁ 2 0 1 6 , ▁the ▁one - lane ▁Cass ▁Road ▁Bridge ▁over ▁the ▁Board man ▁River ▁was ▁becoming ▁more ▁and ▁more ▁ob sole te . ▁ ▁In ▁May ▁ 2 0 1 6 , ▁the ▁Grand ▁Tra verse ▁County ▁Road ▁Commission