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assessment Alternative 1

Alternative 1 A

Alternative 2

Alternative 2 Refined

Alternative 3

Evaluation Criteria Pros

Cons

Pros

Cons

Pros

* The vertical grade of the LRT to go from at-grade at Intersection 5 to elevated section north of the bridge may violate design criteria

Constructability and schedule of construction

* Does not involve change to existing roadways and Intersection 5

* Will require coordination with FAA to ensure elevated structure does not impinge into airspace

Federal Actions

Level of service and traffic flow and improvements

* Will be extremely challenging in * Does not involve * Construction of the constructing the constructing an elevated sections will elevated viaduct while elevated section be challenging over maintaining traffic through Intersection 5 existing roadway through Intersection 5

* Retains existing capacity on Isleta evacuation route

Antonio Di Mambro, P.C.

* Traffic will operate at unacceptable levels of service during the peak periods

* May require coordination with FAA to ensure elevated structure does not impinge into airspace

* Retains existing capacity on Isleta evacuation route

* Traffic will operate at unacceptable levels of service during the peak periods

* Traffic will operate at acceptable levels of service at the proposed at-grade intersection at PR-1/ PR-26

* Retains existing capacity on Isleta evacuation route

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KCUS

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Cambridge Systematics

Cons

Pros

Cons

Pros

Cons

* Conversion of existing one-way bridges to two-way operations provide greater flexibility in detouring traffic for demolition & construction

* Will require temporary detour of traffic exiting the Isleta to allow demolition of existing frames (bridges)

* Will require a temporary detour of the traffic exiting the Isleta to allow construction of the new Concrete Frame

* Will require a temporary detour of the traffic exiting the Isleta to allow construction of the new Concrete Frame

* May impact the Existing Frame 1 due to close proximity of the new Concrete Frame

* May impact the Existing Frame 1 due to close proximity of the new Concrete Frame

* Detour of traffic from Isleta destined to PR-26 will be most challenging

* Detour of traffic from Isleta destined to PR-26 will be most challenging

* Will require coordination with PRHTA and FHWA for temporary removal of ramp structures

* Will require coordination with PRHTA and FHWA for temporary removal of ramp structures

* Will require extension coordination with PRHTA and FHWA for removal and reconstruction at grade of existing ramp structures

* May trigger NEPA, requiring potentially a CE or EA

* May trigger NEPA, requiring potentially a CE or EA

* Likely to trigger NEPA, requiring a federal EA or EIS

* Traffic will operate * Traffic will not * Traffic will not at acceptable levels operate acceptably operate acceptably of service at the at the intersection at the intersection * Will require proper proposed at-grade of Ponce de Leon at intersection at PR-1/ of Ponce de Leon at signing, traffic signal * All at-grade Calle 5 unless the Calle 5 unless the coordination and PR-26 intersections will Transit Signal Priority number of lanes going number of lanes going operate at acceptable to achieve optimal towards Old San Juan towards Old San Juan levels of service is increase from the is increase from the traffic flow through * Retains existing currently proposed currently proposed Intersection 5 capacity on Isleta 1 to 3 lanes at the 2 to 3 lanes at the evacuation route intersection intersection

APPENDIX 1.3-1 INTERSECTION-5 COMPARATIVE ANALYSIS OF ALTERNATIVES

Profile for Publicidad Tere Suarez

Appendix Vol 1 Part I.pdf  

Tren Liviano - Declaracion Impacto Ambiental

Appendix Vol 1 Part I.pdf  

Tren Liviano - Declaracion Impacto Ambiental

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