frank howarth | Building the Morrison Bridge @frankmakes | Uploaded 6 years ago | Updated 9 hours ago
This is building my daughter's 3rd grade bridge project. She picked the Morrison Bridge here in Portland. It is a draw bridge with 2 central cantilevered trusses that open to allow boats to pass through. We built the bridge in the wood shop using the CNC router to cut out most of the parts from 3mm and 9mm birch plywood. She wanted the bridge to actually operate so we made the drawbridge section work similarly to the real bridge with a gear mechanism and a counterweight.
This is her written report.
Did you know that the Morrison Bridge is the first bridge build in Portland? The original bridge was built in 1887. Then they built a new one in 1905. The one today was built in 1958.
The design is a double leaf “Chicago style” bascule. It is also a beam bridge.
It crosses the Willamette River in Portland, OR. Motor vehicles, pedestrians, and bicycles are only allowed on the bridge.
It carries about 50,000 vehicles a day.
It connects the East and West sides of the river. It has ramps to the I-5 and 84 freeways.
It was named after John Morrison a missionary who came from Scotland in 1842. He owned a riverfront lumber and feed store.
It can light up. You can fill out a form and pay a fee and choose the colors that light up the Morrison Bridge
I walked across the bridge. The part of the bridge that lifts up vibrates when vehicles drive over it. It has teeth where the two halves the bridge meet in the middle.
It is my favorite bridge because it was the first bridge built in Portland.
Building the Steel Bridge: youtu.be/c-ImV8Sb3UI
Some of the tools used in this project
Cantilever Clamps: http://amzn.to/1TJmAFx
Milwaukee 18-volt Compact Drill: http://amzn.to/1sj855F
Whiteside Router Bit 1/8-Inch: http://amzn.to/1NvVwxd
Whiteside Router Bit 1/4-Inch: http://amzn.to/2bPwUhf
Oshlun 8-1/2-Inch Negative Hook Finishing ATB Saw Blade:http://amzn.to/1TJmTQJ
FastCap Glu-Bot Glue Bottle: http://amzn.to/1TJn0vq
3M Peltor Junior Earmuff: http://amzn.to/257kfQr
3M Peltor H10A Optime 105 Earmuff: http://amzn.to/1sj80iw
3M Reusable Respirator: http://amzn.to/2cGwyPL
3M Particulate Filter P100: http://amzn.to/2bYwhaK
To see upcoming projects follow me on social media
Instagram
instagram.com/frank.howarth
Twitter
twitter.com/FrankHowarth
Facebook
facebook.com/FrankMakes
G+
plus.google.com/+frankhowarth
This is building my daughter's 3rd grade bridge project. She picked the Morrison Bridge here in Portland. It is a draw bridge with 2 central cantilevered trusses that open to allow boats to pass through. We built the bridge in the wood shop using the CNC router to cut out most of the parts from 3mm and 9mm birch plywood. She wanted the bridge to actually operate so we made the drawbridge section work similarly to the real bridge with a gear mechanism and a counterweight.
This is her written report.
Did you know that the Morrison Bridge is the first bridge build in Portland? The original bridge was built in 1887. Then they built a new one in 1905. The one today was built in 1958.
The design is a double leaf “Chicago style” bascule. It is also a beam bridge.
It crosses the Willamette River in Portland, OR. Motor vehicles, pedestrians, and bicycles are only allowed on the bridge.
It carries about 50,000 vehicles a day.
It connects the East and West sides of the river. It has ramps to the I-5 and 84 freeways.
It was named after John Morrison a missionary who came from Scotland in 1842. He owned a riverfront lumber and feed store.
It can light up. You can fill out a form and pay a fee and choose the colors that light up the Morrison Bridge
I walked across the bridge. The part of the bridge that lifts up vibrates when vehicles drive over it. It has teeth where the two halves the bridge meet in the middle.
It is my favorite bridge because it was the first bridge built in Portland.
Building the Steel Bridge: youtu.be/c-ImV8Sb3UI
Some of the tools used in this project
Cantilever Clamps: http://amzn.to/1TJmAFx
Milwaukee 18-volt Compact Drill: http://amzn.to/1sj855F
Whiteside Router Bit 1/8-Inch: http://amzn.to/1NvVwxd
Whiteside Router Bit 1/4-Inch: http://amzn.to/2bPwUhf
Oshlun 8-1/2-Inch Negative Hook Finishing ATB Saw Blade:http://amzn.to/1TJmTQJ
FastCap Glu-Bot Glue Bottle: http://amzn.to/1TJn0vq
3M Peltor Junior Earmuff: http://amzn.to/257kfQr
3M Peltor H10A Optime 105 Earmuff: http://amzn.to/1sj80iw
3M Reusable Respirator: http://amzn.to/2cGwyPL
3M Particulate Filter P100: http://amzn.to/2bYwhaK
To see upcoming projects follow me on social media
instagram.com/frank.howarth
twitter.com/FrankHowarth
facebook.com/FrankMakes
G+
plus.google.com/+frankhowarth
