Yes indeed there are 3 crossings, I was just pointing out that two of them are being reduced from 4 to 2 lanes on a segment that will be under construction. That has a major traffic impact on all three harbor crossings.
I believe that the I-695 (really MD-695) project at the Curtis Creek drawspan is supposed to be completed before the I-895 Canton Viaduct project gets under way.
To be completed in Nov. 2018 as I cited above. So are they going to wait 11 months before closing 2 lanes on the I-895 HTT?
I see that the answer is YES --
"Stage-one construction on the I-895 project begins in March 2018, with lane widths reduced to 11 feet and work taking place on the shoulders and under the I-895 bridge. Major traffic impacts during stages two and three begin after Thanksgiving 2018 and are expected to last until mid-2021.
During stage two, northbound I-895 will close 24/7, and two-way traffic will operate on southbound I-895. The Holabird Avenue exit ramp will close 24/7 during stage two.
Stage three begins in early 2020, when southbound I-895 will close 24/7 and two-way traffic will operate on northbound I-895. The I-895/Holabird Avenue ramp will reopen to traffic in stage three.
In order to rehabilitate the tunnel and tunnel approach roadway surface, MDTA will close each of the two tunnel bores for 60-days at separate times."
http://www.mdta.maryland.gov/News/MDTA_News_Releases/major-system-preservation-projects-coming-to-i-695-i-895-in-baltimore....
They had extended HTT tube closures soon after the Fort McHenry Tunnel opened in 1985, for major tunnel rehabs. After all these years certainly it is time for another major rehab and modernization to tunnel systems.
Wonder what they are going to do with ventilation, replace the plenum fans, or go the jet fan route like on the Norfolk-Portsmouth tunnel rehabs?
The $189 million is a lot of money, but it covers a lot more than just the 0.9 mile Canton Viaduct.