New Cape Cod Canal bridge discussed

[froggie]

Probably along those lines, though you drew yours right over the top of a mining quarry.  A quick check of topography suggests that going north/east of the quarry is more likely.

[Roadsguy]

Probably along those lines, though you drew yours right over the top of a mining quarry.  A quick check of topography suggests that going north/east of the quarry is more likely.

Oh, whoops, I was wondering what that is. North/east would make more sense.

[NE2]

(Preferably with freeway-freeway movements for 28-to-3 which I forgot to add...)

Do you really want a through movement crossing all three bridges?

[AMLNet49]

When the Flyover proposal first came around, I though the way it should have been was a direct split between US-6 West to the left and MA-3 North to the right. A loop ramp to stay on the same road is usually a terrible idea, and in this case it cost the Flyover any effectiveness.

[DJStephens]

Both the Bourne and Sagamore bridges are Depression era (mid thirties) in age.  Date placards are clearly visible as one travels up the steep upgrade to the center crest on both structures.   An ideal solution would be to build parallel cable stayed structures alongside both, and retire both original bridges - to pedestrian and bike use.   The geometrics are not good - narrow and steep, as they were designed in the era of flivvers (Model T's).   Again this is ideal, actual realities may dictate otherwise.   

[iBallasticwolf2]

Both the Bourne and Sagamore bridges are Depression era (mid thirties) in age.  Date placards are clearly visible as one travels up the steep upgrade to the center crest on both structures.   An ideal solution would be to build parallel cable stayed structures alongside both, and retire both original bridges - to pedestrian and bike use.   The geometrics are not good - narrow and steep, as they were designed in the era of flivvers (Model T's).   Again this is ideal, actual realities may dictate otherwise.   

That would be ideal. But that would cost more money than just building another span and having one way of traffic on the new span with the other way on the old span. In that case you might be able to make a bike trail but the odds aren't good if you want more lanes than 2 in each direction. If you want 3 for a redone Sagmore than you can't have the trail unless you remove the shoulders. The Bourne is pretty much the same.

[froggie]

It'd likely be easier to just build the bike/ped path on the new bridge.  No worry about squeezing one onto the old bridge in that scenario.

[SteveG1988]

Here's the question, would you support them building a modern tied arch (think Jefferson Barracks bridge or the I24 bridges in KY, or even the US13 Bridge at Saint George DE)  instead of a Truss bridge like the originals?

[iBallasticwolf2]

Here's the question, would you support them building a modern tied arch (think Jefferson Barracks bridge or the I24 bridges in KY, or even the US13 Bridge at Saint George DE)  instead of a Truss bridge like the originals?

A modern tied arch would probably actually work better than a cable stayed for the width of the canal.

[MikeTheActuary]

I'm still waiting for someone to tell me where the Cape Cod Tunnel is.   

[SteveG1988]

Here's the question, would you support them building a modern tied arch (think Jefferson Barracks bridge or the I24 bridges in KY, or even the US13 Bridge at Saint George DE)  instead of a Truss bridge like the originals?

A modern tied arch would probably actually work better than a cable stayed for the width of the canal.

No pun... It would tie into the design of the older bridges better.

That being said, there is nothing really preventing them from just building a bigger version of the same bridges, they are still being built to this day. NJ and PA are going to be building one within the next decade.