WORK PROGRAM
I-90 Allston Multimodal Modeling
PHASE 1
June 15, 2023
The Boston Region Metropolitan Planning Organization (MPO) votes to approve this work program.
Agency and Other Client Transportation Planning Studies and Technical Analyses
Massachusetts Department of Transportation (MassDOT) Highway Division
Client Supervisor: Mike O’Dowd
Principal: Rosemary McCarron
Manager: Ben Dowling
MassDOT On-Call Support Contract
Schedule and budget details are shown in Exhibits 1 and 2, respectively.
This studyis supported in full with non-MPO funding. Committing MPO staff to this project will not impinge on the quality or timeliness of MPO-funded work.
This work program will expand upon prior Central Transportation Planning Staff (CTPS) work modeling the Allston Multimodal Project. The project is expected to dramatically improve livability and connectivity for residents of the Allston neighborhood of Boston. It will enhance regional mobility through improvements to Interstate 90 (I-90) and its abutting interchange and create a new stop on the Worcester/Framingham commuter line, to be known as West Station.
CTPS provided support for this project in 2018 and 2020. MassDOT and its project team are currently developing a Supplemental Draft Environmental Impact Report and have requested that CTPS produce travel-demand forecasts to help understand the transportation impacts and opportunities of the project.
CTPS will support MassDOT and the project team by using CTPS’s regional travel demand model set to produce data on highway volumes, transit volumes, and mode splits in the study area for opening- and forecast-year scenarios.
As described in Tasks 1 through 4 below, CTPS will estimate roadway volumes for I-90, the Allston Interchange, and the surface roadway network surrounding the interchange. This is a Phase 1 work program and it is anticipated that additional phases will follow.
CTPS will prepare the regional travel demand model for use in this study.
A regional travel demand model set which is suitable for the study
CTPS will model the Forecast-Year No-Build scenario to include a new split zone for Transportation Analysis Zone (TAZ) 246 and reconfigured centroid connectors to produce more realistic highway assignments for TAZ 246 and the new TAZ. The No-Build scenario will also incorporate expected changes to transit operations in the horizon year, including a spring 2023 commuter rail schedule and Bus Network Redesign routing for specific routes to be identified by the project team. This No-Build scenario will be compared to an appropriate base-year scenario.
CTPS will model the Opening-Year No-Build scenario to support the project team and its opening-year analysis.
CTPS will provide the project team with the same set of outputs and analysis listed under Task 2 above, except for volume plots.
CTPS will coordinate with the project team throughout the study, which is expected to result in the submission of an environmental filing.
Attendance at various internal team meetings
| Task | Month | ||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
1.
Model Setup |
From Month 1, Week 1 to Month 1, Week 4.
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2.
Model One Forecast Year Scenario |
From Month 1, Week 3 to Month 4, Week 1.
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3.
Model One Opening Year Scenario |
From Month 4, Week 2 to Month 5, Week 1.
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4.
Project Coordination |
From Month 1, Week 1 to Month 5, Week 1.
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| Task | Person-Weeks | Direct Salary | Overhead (119.34%) | Total Cost | |||
|---|---|---|---|---|---|---|---|
| M-1 | P-4 | P-2 | Total | ||||
1.
Model Setup
|
0.0 | 2.0 | 1.0 | 3.0 | $4,837 | $5,772 | $10,608 |
2.
Model One Forecast Year Scenario
|
0.0 | 9.0 | 9.0 | 18.0 | $27,952 | $33,358 | $61,310 |
3.
Model One Opening Year Scenario
|
0.0 | 3.0 | 4.0 | 7.0 | $10,692 | $12,760 | $23,452 |
4.
Project Coordination
|
2.0 | 1.5 | 2.0 | 5.5 | $9,423 | $11,245 | $20,669 |
Total
|
2.0 | 15.5 | 16.0 | 33.5 | $52,904 | $63,135 | $116,039 |
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For more information, including numbers for Spanish speakers, visit https://www.mass.gov/massrelay. |