From an historical perspective, when the original Massey (then Deas Island) Tunnel was proposed during the 1950's by the then Socred gov't, the then opposition called it a "tunnel to nowhere".
In fact, the original proposal was for 3 GP lanes in each direction but apparently then budget constraints nixed that.
Most of my life has involved using the GM Tunnel - grew up in Tsawwassen (know all about the "ferry dumps"). Now reside in White Rock (and ~2 days/ week in downtown Van City). Know the GMT inside and out.
For years now, goin' 50 - 60 km/hr thru the GMT (in the left lane) is a major time-consumin' headache. Even 20 years ago I was able to blaze through.
In fact, I highly suspect that the GMT traffic counts (AADT) have been at current levels for years while the AFB has increased considerably. Good reasons for that:
1. In morning rush hour, SB traffic avoids the GMT like the plague (headed toward South Surrey/WR/ the border and with the SFPR perhaps even South Delta/Ferry Terminal);
2. In the evening rush hour, NB traffic from the border, South Surrey, WR also avoids the GMT like a plague (even though it's a much shorter distance and travel time to downtown Van City);
In both these scenarios - the AFB is the quick by-pass.
In fact, ~2 years ago, I had a very important late engagement in downtown Van City (4 pm deadline) and decided to use the GMT by 3 pm. Was stuck in traffic for 35 minutes from one end of the GMT to the other. And that was BEFORE the one-lane NB evening rush hour change-over.
Knew then that I would fail to make a 4 pm deadline in downtown Van City - pleaded on my cell phone for further time extension but was told that I would not be given any grace. Cost me in the $5 figures as a result. Was not a happy camper.
Aside from that, the only 2 crossing structures that I don't wanna be on are the Pattullo Bridge and GMT if a major seismic event hits. Even though the GMT has witnessed some seismic improvements ("steel band-aids" connecting GMT roof sections) the remaining seismic improvements are cost prohibitive. In that vein, when the AFB was constructed in the early 1980's, it was engineered to withstand structural damage under an 8.5 quake.
Again, the original GMT plan back in the mid-1950's called for 3 GP lanes in each direction. The new proposed bridge replacement? The exact same 3 GP lane configuration in each direction + 1 HOV lane + 1 climbing & merging lane. What's not to like?
Furthermore, Translink coach buses will be able to fly down the proposed rebuilt 99 fwy at 100 - 110 km/hr speeds. As fast and most comfortable as it gets in the entire metro in terms of transit.
And within 20 years of its completion, population serving the new GMB will increase by 51%. Employment will also increase by 58% thereto - Folks from across the region will be filling those slots.
Some of ya guys postin' here from inner city Vancouver should live the metro life on a daily basis. Perhaps then, and only then, ya will have a more "real world view"!
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As for the entire design... 10-lane crossing (3 GP + 1 HOV + 1 merge/ truck climbing lane) - good design;
3-level interchanges at both Steveston Hwy and Hwy 17A at either end. Cool;
See that the southern end of the project definition report concludes at Hwy 91 interchange. Would have hoped that it would have at least extended further southward to the KGH interchange and 32nd Ave just up the hill in South Surrey. These days, both morning traffic, afternoon traffic as well as typical day-time traffic clogs up considerably thereto.
Perhaps that section as well as a future replacement of the Oak Street Bridge will be incorporated into a new project well down the road. They will be required.
As an aside, frankly, I still don't see how the project will commence construction in 2017. Why? Well, the new GMT replacement project was submitted to the BC Environmental Assessment Office just today. To put that into perspective, the PMB/Hwy 1 project was submitted back on May 18, 2006. Over 2 years later on June 12, 2008, that project received its final BCEAO enviro certification.
Utilizing same for a time-frame - BCEAO enviro certification won't be received until ~December, 2017/ January, 2018. That said, many projects under BCEAO have commenced construction prior to BCEAO certification.
In any event, the current, sub-standard GMT "dog" outlived its useful life at least a couple of decades ago!