Assembling Memorial Bridge
  • Print
Written by Strawbery Banke Archive

22901.jpg

Strawbery Banke Presents
HISTORIC PORTSMOUTH #229

What a shame it would be lose our Memorial Bridge. Not only is it a war memorial and a downtown link to Maine, but it is an architectural and engineering masterpiece, a rare and historic lift-bridge. (Continued below)

 

 

 

HISTORIC PHOTOS of the Greater Portsmouth Area appear here week

229memorial01.jpg

Link a Giant Erector Set on the Piscataqua 1923 

Like the restored North Church steeple, it has become an iconic image of scenic Portsmouth. It was a modern marvel when dedicated in 1923. The footings are sunk as deep as 82 feet into bedrock below the river. Six thousand tons of sand and 14,000 barrels of cement were used to pin the steel footings in place. The three spans are 300 feet each. In the original bridge, two concrete counter weights balanced a million pounds of road , pulled up and down by 64 cables in just a couple of minutes as many as 20 times a day. Here the middle section spanning the Piscataqua is being floated into place by tugs.

BONUS PHOTOS

229memorial03.jpg

229memorial02.jpg

229memorialbridge04.jpg

 This image from the book STRAWBERY BANKE:
A Seaport Museum 400 Years in the Making
by J. Dennis Robinson
(c) Strawbery Banke Museum Collection
 

Strawbery Banke