by GojiMet86
The final EIS report for LGA Access has been released:
https://www.lgaaccesseis.com/
https://www.lgaaccesseis.com/final-eis-document
The relevant N/W Astoria line alternatives and why they were rejected:
http://ricondoprojects.com/LGAAccess/fi ... 210312.pdf
https://www.lgaaccesseis.com/
https://www.lgaaccesseis.com/final-eis-document
The relevant N/W Astoria line alternatives and why they were rejected:
http://ricondoprojects.com/LGAAccess/fi ... 210312.pdf
2.6.3.1 ALTERNATIVE 8A: FROM ASTORIA BOULEVARD SUBWAY STATION: ELEVATED ABOVE ASTORIA BOULEVARD AND GRAND CENTRAL PARKWAY ALTERNATIVE
This alternative would have a material effect on major transportation facilities and major utilities. Specifically, this alternative would result in the need to modify the Hell Gate rail trestle, would result in a permanent reduction in service at the Astoria Boulevard Subway Station and the Astoria-Ditmars Boulevard Subway Station, would require the permanent closure of travel lanes on Astoria Boulevard and the GCP, and would affect existing major underground utility lines. Additionally, this alternative would disrupt peak-hour operation of the Amtrak Northeast Corridor and the N-W Lines during construction. As a result, this alternative would not be reasonable to construct and operate and was eliminated from further consideration.
2.6.3.2 ALTERNATIVE 8B: FROM ASTORIA-DITMARS BOULEVARD SUBWAY STATION: ELEVATED ABOVE 31ST STREET AND 19TH AVENUE ALTERNATIVE
This alternative would have a material effect on major transportation facilities and major utilities. Specifically, this alternative would result in the temporary closure of a portion of 31st Street and 19th Avenue and would affect existing major underground utility lines. Avoiding the material effect on major utilities would result in the permanent closure of travel lanes on a portion of 31st Street. As a result, this alternative would not be reasonable to construct and operate and was eliminated from further consideration.
2.6.3.3 ALTERNATIVE 8C: FROM ASTORIA-DITMARS BOULEVARD SUBWAY STATION: TUNNEL BENEATH 31ST STREET AND 19TH AVENUE ALTERNATIVE
This alternative would have a material effect on major transportation facilities and major utility lines. Specifically, this alternative would result in the permanent closure of a portion of 31st Street, would result in the permanent loss of parking on a portion of 31st Street, and would affect existing major underground utility lines. Additionally, this alternative would disrupt peak-hour subway, rail, and/or transit service during construction, including Amtrak Northeast Corridor service and the N-W Lines. As a result, this alternative would not be reasonable to construct and operate and was eliminated from further consideration.
2.6.3.4 ALTERNATIVE 8D: FROM ASTORIA-DITMARS BOULEVARD SUBWAY STATION: ELEVATED ABOVE DITMARS BOULEVARD AND GRAND CENTRAL PARKWAY ALTERNATIVE
To provide a general cost for subway construction, the average per mile cost of $976.0 million for elevated subways and $1.09 billion for underground subways was used. On this basis, the 1.89-mile elevated subway and the 0.61-mile underground subway in this alternative would cost approximately $2.51 billion, which is less than two and a half times the estimated $2.05 billion cost associated with the Port Authority’s proposed alternative. This alternative is on the N-W Lines and would provide reasonable access to all identified access points. This alternative would have a material effect on major transportation facilities and major utilities. Specifically, this alternative could disrupt peak-hour Amtrak Northeast Corridor service during construction, would result in the temporary closure of travel lanes on Ditmars Boulevard, and would result in the permanent shift of travel lanes and the permanent removal of parking lanes on Ditmars Boulevard. In addition, this alternative would affect existing major underground utility lines. Avoiding the material effect on major utilities would result in a permanent closure of a portion of Ditmars Boulevard. As a result, this alternative would not be reasonable to construct and operate and was eliminated from further consideration.