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I-5 Columbia River Crossing (OR/WA)

Started by Tarkus, March 14, 2009, 04:18:13 PM

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Bruce

New video flyovers of the proposed options: https://bikeportland.org/2024/10/15/new-videos-show-what-i-5-freeway-expansion-over-columbia-river-would-look-like-390582

Interchanges


Sigle-level, Fixed-span Steel Girder Bridges



Single-level, Fixed-span Extradosed Bridges


Double-deck, Fixed-span Truss Bridges


Wikipedia - TravelMapping (100% of WA SRs)

Photos


pderocco

Even though Hayden Island is in Oregon, these designs make it more accessible from Washington. You'd think they'd have been able to weave freeway ramps from Oregon to N Hayden Island Dr., making it symmetric with the freeway ramps from Washington to Jantzen Ave, instead of building a separate 2-lane bridge accessible only through two roundabouts that will leave you dizzy.

Bruce

Quote from: pderocco on October 21, 2024, 03:24:34 AMEven though Hayden Island is in Oregon, these designs make it more accessible from Washington. You'd think they'd have been able to weave freeway ramps from Oregon to N Hayden Island Dr., making it symmetric with the freeway ramps from Washington to Jantzen Ave, instead of building a separate 2-lane bridge accessible only through two roundabouts that will leave you dizzy.

The main draws to Jantzen Beach are the retailers who are courting Washington shoppers by being close enough to the state line. There's not a lot of room to build all the ramps needed, so prioritizing Washington makes sense.
Wikipedia - TravelMapping (100% of WA SRs)

Photos

pderocco

Quote from: Bruce on October 21, 2024, 04:03:01 PM
Quote from: pderocco on October 21, 2024, 03:24:34 AMEven though Hayden Island is in Oregon, these designs make it more accessible from Washington. You'd think they'd have been able to weave freeway ramps from Oregon to N Hayden Island Dr., making it symmetric with the freeway ramps from Washington to Jantzen Ave, instead of building a separate 2-lane bridge accessible only through two roundabouts that will leave you dizzy.

The main draws to Jantzen Beach are the retailers who are courting Washington shoppers by being close enough to the state line. There's not a lot of room to build all the ramps needed, so prioritizing Washington makes sense.

Sort of like Nevada casinos along the California border.

PNWRoadgeek

Ugh. Feels like this gets brought up whenever someone discusses the Interstate Bridge. It's been proposed for so long and yet it always seems to get pushed behind because something more "important" pops up(Specifically, the fact that it's always proposed with either light rail, a flawed design, or no interchange accommodation for both sides of the bridge if you know what I mean) I think it's needed, the Interstate Bridge is so worn down and isn't suitable for the amount of traffic that's heading north to Washington on I-5. There's always so much traffic heading onto the bridge especially going northbound, which causes frequent traffic jams.

Reading this thread from time to time has been interesting, especially seeing other forum users opinions on the current project at hand.
Applying for new Grand Alan.



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