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Longest free bridge in the US

Started by hotdogPi, December 31, 2013, 09:31:10 PM

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hotdogPi

Since most very long bridges have tolls, I am wondering what the longest free bridge is.

It has to be free for cars in both directions.
Clinched, minus I-93 (I'm missing a few miles and my file is incorrect)

Traveled, plus US 13, 44, and 50, and several state routes

I will be in Burlington VT for the eclipse.


roadman65

I would have to say either the Bridge to South Padre Island or the Hampton Roads Bridge Tunnel.
Every day is a winding road, you just got to get used to it.

Sheryl Crowe

Ga293

It's the Manchac Swamp Bridge, on the the southern end of I-55 in Louisiana. In the US, only the Lake Pontchartrain Causeway is longer, and it's tolled.

NE2

pre-1945 Florida route log

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SteveG1988

I'd also say if it is a bridge only over water, the Virginia Dare memorial bridge is 5.2 mi long and connects the outer banks to the mainland.

https://en.wikipedia.org/wiki/Virginia_Dare_Bridge

Slightly longer is the I-10 twin span: https://en.wikipedia.org/wiki/I-10_Twin_Span_Bridge



Roads Clinched

I55,I82,I84(E&W)I88(W),I87(N),I81,I64,I74(W),I72,I57,I24,I65,I59,I12,I71,I77,I76(E&W),I70,I79,I85,I86(W),I27,I16,I97,I96,I43,I41,

froggie

Technically speaking (and something we've had a thread about here in the past), one could start at the north end of the Manchac Swamp Bridge and go south on I-55, east on I-10, then south on I-310 to between US 61 and LA 48 (or vice versa) and be on bridge the entire time...a total of a little over 38 miles.

Mapmikey

Quote from: SteveG1988 on January 01, 2014, 02:05:45 AM
I'd also say if it is a bridge only over water, the Virginia Dare memorial bridge is 5.2 mi long and connects the outer banks to the mainland.

https://en.wikipedia.org/wiki/Virginia_Dare_Bridge

Slightly longer is the I-10 twin span: https://en.wikipedia.org/wiki/I-10_Twin_Span_Bridge





There's always the 7-mile bridge in the Florida Keys...

For Virginia, both the US 17-258 James River and I-664 James River bridges are longer than the Hampton Roads Bridge-Tunnel. 

US 17-258 is longest at about 4.4 miles.

Mapmikey

doorknob60

Not as long as some of the others, but the Astoria—Megler Bridge is 4.1 miles long.

roadman65

How could I forget about the 7 mile bridge?  I have been across it many times in my younger days.
Every day is a winding road, you just got to get used to it.

Sheryl Crowe

Alps

Quote from: Mapmikey on January 01, 2014, 12:22:50 PM

There's always the 7-mile bridge in the Florida Keys...
My first thought, indeed.
Quote from: froggie on January 01, 2014, 09:27:43 AM
Technically speaking (and something we've had a thread about here in the past), one could start at the north end of the Manchac Swamp Bridge and go south on I-55, east on I-10, then south on I-310 to between US 61 and LA 48 (or vice versa) and be on bridge the entire time...a total of a little over 38 miles.
Since I'm an engineer, I have to be picayune - is it a "bridge" just because it's up on structure, or does it have to have a name to it as a defined set of spans? Could go either way, not sure what the thread is looking for.

hm insulators

In Los Angeles, I-10 between I-110 and the East L.A. Interchange is on bridge rather than above-grade fill.

Just west of Sacramento, the Yolo Causeway bridges on I-80 are pretty long.
Remember: If the women don't find you handsome, they should at least find you handy.

I'd rather be a child of the road than a son of a ditch.


At what age do you tell a highway that it's been adopted?

agentsteel53

Quote from: hm insulators on January 06, 2014, 01:24:54 PM
In Los Angeles, I-10 between I-110 and the East L.A. Interchange is on bridge rather than above-grade fill.


similarly, the Alaskan Way viaduct in Seattle.
live from sunny San Diego.

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