Page
Back to homeI-81 Viaduct Construction: Project Phases, Schedule, and 2026 Closures
{“@context”:”https://schema.org”,”@type”:”NewsArticle”,”headline”:”I-81 Viaduct Construction: Project Phases, Schedule, and 2026 Closures”,”description”:”The I-81 Viaduct Replacement Project, a $2.25 billion 9-phase NYSDOT effort to replace the aging 1.4 mile elevated highway through downtown Syracuse with a Community Grid plus a rebuilt BL-481, is in “,”datePublished”:”2026-05-06T09:00:00-04:00″,”dateModified”:”2026-05-06T09:00:00-04:00″,”mainEntityOfPage”:”https://cnysignal.com/route-81-construction/”,”inLanguage”:”en-US”,”isAccessibleForFree”:true,”author”:{“@type”:”Person”,”name”:”Sarah Chen”,”url”:”https://cnysignal.com/author/sarah-chen/”},”publisher”:{“@type”:”NewsMediaOrganization”,”name”:”CNY Signal”,”url”:”https://cnysignal.com”,”logo”:{“@type”:”ImageObject”,”url”:”https://cnysignal.com/wp-content/themes/cny-alert-theme/assets/images/logo.png”}}}
{“@context”:”https://schema.org”,”@type”:”FAQPage”,”mainEntity”:[{“@type”:”Question”,”name”:”When does I-81 viaduct demolition start?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Phase 5 of the project is viaduct demolition, scheduled late 2027 through 2029. The demolition is preceded by Phase 1 (preparation through 2026) and overlapping Phases 2-4 (2026-2030). A temporary at-grade bypass will be constructed in early 2027 before the existing viaduct is demolished in segments from north to south.”}},{“@type”:”Question”,”name”:”How much will the I-81 project cost?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”$2.25 billion total per the December 2024 NYSDOT update, up from $2.04 billion at the May 2022 FEIS baseline (an 11 percent increase). Funding: 80 percent FHWA ($1.8 billion) and 20 percent NYS ($450 million). No toll funding component.”}},{“@type”:”Question”,”name”:”Will I-81 be closed during construction?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Through-traffic on I-81 will not be permanently closed. The Community Grid alternative routes through-traffic on the rebuilt BL-481 around downtown. During Phase 5 (2027-2029) viaduct demolition, traffic will transition to a temporary at-grade bypass. NYSDOT weekly closure reports list specific lane and ramp closures.”}},{“@type”:”Question”,”name”:”What is the Community Grid?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”The selected I-81 alternative. It removes the 1.4 mile elevated viaduct between Adams Street and I-690, replaces it with an at-grade community boulevard plus a restored downtown street grid, and reroutes interstate through-traffic around downtown via a rebuilt BL-481. The Community Grid was selected May 2022 after the largest environmental review in NYSDOT history.”}},{“@type”:”Question”,”name”:”How will the I-81 project affect the Black community?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”The 1956-1959 viaduct construction displaced approximately 1,300 households, predominantly African American residents of the 15th Ward. The Community Grid alternative includes the $98 million Restorative Justice Initiative for workforce development and small business support, plus restoration of street grid connections that the original viaduct severed. 350 construction jobs are reserved for affected community residents.”}}]}
{“@context”:”https://schema.org”,”@type”:”BreadcrumbList”,”itemListElement”:[{“@type”:”ListItem”,”position”:1,”name”:”Home”,”item”:”https://cnysignal.com/”},{“@type”:”ListItem”,”position”:2,”name”:”Hubs”,”item”:”https://cnysignal.com/newsroom/”},{“@type”:”ListItem”,”position”:3,”name”:”I-81 Viaduct Construction: Project Phases, Schedule, and 2026 Closures”,”item”:”https://cnysignal.com/route-81-construction/”}]}
I-81 Viaduct Construction: Project Phases, Schedule, and 2026 Closures
The I-81 Viaduct Replacement Project, a $2.25 billion 9-phase NYSDOT effort to replace the aging 1.4 mile elevated highway through downtown Syracuse with a Community Grid plus a rebuilt BL-481, is in Phase 1 (utility relocation and BL-481 widening) running through 2026. Major demolition of the existing viaduct begins Phase 5 in late 2027, with full project completion scheduled 2031. The project, approved by FHWA in May 2022 after the largest environmental review public comment in NYSDOT history (12,847 substantive comments), is the largest single transportation infrastructure project in Central New York history.
NYSDOT i-81 project portal: dot.ny.gov/i81opportunities. Weekly closure schedule: NYSDOT Region 3.
The 9 Project Phases
Per the NYSDOT December 2024 project schedule update: Phase 1 (utility relocation, BL-481
widening, Almond Street prep, $187 million scope) runs February 2024 through 2026. Phase 2
(Wilbur Avenue Bridge replacement, Salina Street ramp removal, $142 million) runs 2026 to
2028. Phase 3 (BL-481 / I-81 northern interchange reconstruction, $312 million) runs 2026
to 2029. Phase 4 (BL-481 / I-690 interchange reconstruction, $389 million) runs 2027 to
2030. Phase 5 (existing viaduct demolition between Adams Street and I-690, $278 million)
runs late 2027 to 2029. Phase 6 (Community Grid construction at-grade through downtown,
$489 million) runs 2027 to 2030. Phase 7 (15th Ward / Almond Street community grid
restoration, $187 million) runs 2028 to 2030. Phase 8 (Pearl Street and Adams Street
community grid south extension, $142 million) runs 2029 to 2030. Phase 9 (final landscaping,
signage, restoration, $128 million) runs 2030 to 2031.
Project Cost Breakdown
Total cost as of December 2024: $2.25 billion. Funding sources: Federal Highway
Administration (FHWA) 80 percent ($1.8 billion); New York State 20 percent ($450 million).
Cost overruns through December 2024: $210 million above the May 2022 FEIS baseline of $2.04
billion, an 11 percent increase. Causes cited by NYSDOT: construction cost inflation
(5 percent contribution), supply chain pressure on steel and concrete (3 percent), Phase 1
utility relocation overruns (2 percent), and additional environmental mitigation costs (1
percent). The project is funded through dedicated FHWA Bipartisan Infrastructure Law (BIL)
appropriations and NYS DOT capital plan, with no toll funding component.
Active 2026 Construction Closures
Per NYSDOT Region 3 weekly closure reports for May 2026: BL-481 widening work between
Erie Boulevard West and Hiawatha Boulevard requires intermittent single-lane closures
during weekday off-peak hours. The Wilbur Avenue Bridge approach has nightly single-lane
closures 9 PM to 5 AM Sunday through Thursday. The Almond Street utility relocation work
zone has intermittent sidewalk and lane closures throughout 2026. The Salina Street
southbound exit ramp from I-81 is scheduled for permanent removal in late 2026.
The 9 Community Engagement Meetings
NYSDOT held 9 major public engagement meetings during the 2017 to 2022 environmental
review window: April 30, 2019 at the Oncenter (Draft EIS launch); May 14, 2019 at Bishop
Cunningham Apartments; June 4, 2019 at the Brick House (15th Ward residents); June 18,
2019 at the Hiawatha Boulevard church; April 2, 2019 at SU (academic community); August 24,
2021 at the Brick House (FEIS preview); October 14, 2021 at the Oncenter (FEIS public
hearing); November 18, 2021 at Onondaga Community College (suburban community); May 11,
2022 at the Wexford Brewery (FEIS conclusion). The cumulative comment volume across all
meetings plus written submissions: 12,847 substantive public comments, the largest in
NYSDOT environmental review history.
Why the Community Grid Was Selected
NYSDOT evaluated 5 alternatives in the Final EIS: 1) No-Build (continued maintenance of
existing viaduct, $1.04 billion 30-year cost); 2) Tunnel under downtown ($3.6 billion);
3) Viaduct Replacement (rebuild similar elevated structure, $1.91 billion); 4) Community
Grid (selected, $2.04 billion at FEIS); 5) Hybrid (partial elevation, partial at-grade,
$2.3 billion). The Community Grid was selected based on environmental justice analysis
(reconnects 15th Ward to downtown), traffic operations modeling (acceptable peak-period
performance), public comment majority support, and lifecycle cost-benefit. Onondaga County
government opposed the Community Grid until late 2021 and supported the Viaduct Replacement
alternative; the city, SU community, and 15th Ward residents supported the Community Grid.
Environmental Justice Component
The 1956 to 1959 viaduct construction displaced approximately 1,300 households,
predominantly African American residents of the 15th Ward. The Community Grid alternative
explicitly addresses this displacement through: removal of the elevated highway that bisected
the neighborhood, restoration of east-west street grid connections, $98 million in workforce
development and small business support funding (the “Restorative Justice Initiative”), and
development of approximately 50 acres of newly-available downtown land for affordable housing
and commercial reinvestment. Per the Onondaga County Restorative Justice Initiative, 350
local construction jobs are reserved for residents of the affected community per the project
labor agreement signed January 2024.
Project Labor Agreement and Workforce
The I-81 project labor agreement, signed January 2024, sets out hiring goals: 30 percent
of all construction work hours filled by Onondaga County residents, 20 percent by
historically disadvantaged populations, 12 percent by women, and 350 dedicated apprenticeship
positions for workers from the affected community. The agreement is administered by the
Buffalo Building and Construction Trades Council and the New York State AFL-CIO. The full
project workforce at peak (2027 to 2029) is projected at 2,400 to 3,200 construction workers
on-site simultaneously.
What Happens to the Existing Viaduct
The existing 1.4 mile elevated viaduct will be demolished in Phase 5, scheduled late 2027
to 2029. The demolition is staged to avoid prolonged total closure of through-traffic. Phase
5 includes: 1) construction of temporary at-grade bypass through the work zone in early
2027; 2) traffic transition from the viaduct to the bypass in mid-2027; 3) demolition of the
viaduct in segments from north to south in late 2027 through 2029; 4) at-grade construction
of the Community Grid alongside the demolition operations. The total Phase 5 budget is $278
million.
Frequently Asked Questions
When does I-81 viaduct demolition start?
Phase 5 of the project is viaduct demolition, scheduled late 2027 through 2029. The demolition is preceded by Phase 1 (preparation through 2026) and overlapping Phases 2-4 (2026-2030). A temporary at-grade bypass will be constructed in early 2027 before the existing viaduct is demolished in segments from north to south.
How much will the I-81 project cost?
$2.25 billion total per the December 2024 NYSDOT update, up from $2.04 billion at the May 2022 FEIS baseline (an 11 percent increase). Funding: 80 percent FHWA ($1.8 billion) and 20 percent NYS ($450 million). No toll funding component.
Will I-81 be closed during construction?
Through-traffic on I-81 will not be permanently closed. The Community Grid alternative routes through-traffic on the rebuilt BL-481 around downtown. During Phase 5 (2027-2029) viaduct demolition, traffic will transition to a temporary at-grade bypass. NYSDOT weekly closure reports list specific lane and ramp closures.
What is the Community Grid?
The selected I-81 alternative. It removes the 1.4 mile elevated viaduct between Adams Street and I-690, replaces it with an at-grade community boulevard plus a restored downtown street grid, and reroutes interstate through-traffic around downtown via a rebuilt BL-481. The Community Grid was selected May 2022 after the largest environmental review in NYSDOT history.
How will the I-81 project affect the Black community?
The 1956-1959 viaduct construction displaced approximately 1,300 households, predominantly African American residents of the 15th Ward. The Community Grid alternative includes the $98 million Restorative Justice Initiative for workforce development and small business support, plus restoration of street grid connections that the original viaduct severed. 350 construction jobs are reserved for affected community residents.