Greenfield Bridge Project

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Originally constructed circa 1921, inspection and analysis of the structure has indicated the bridge needs to be replaced.

The bridge location and architecture suggest a context sensitive design and coordination with PennDOT for I-376 traffic impacts. It is anticipated that pedestrian, cyclist and vehicular traffic will be rerouted for the full duration of the work.

  • Classification: Community Arterial
  • Limits: Pocusset Drive to Alger Street
  • Length: 466' total length; 274' main span (Existing Bridge)
  • Width: 30' of roadway curb to curb; two 6'7" sidewalks (Existing Bridge)
  • Location: City of Pittsburgh, Squirrel Hill Area spanning I-376 (Parkway East) near Squirrel Hill Tunnels

Visit the History & Bridge Traffic page for more details and to download a Facts Sheet.

Schedule of
Construction Operations

Advertise Date: Advertisement for Construction Bids – June 12, 2015

Opening Date: Bid Opening Date/Identification of Low Bidder – July 16, 2015

Award Date: Approval of Bid/Contractor – August 3, 2015

Notice to Proceed: Written Notice to the Contractor to Begin the Project – September 1, 2015

Bridge Closure: Closure of Greenfield Bridge – October 16, 2015

Implosion Date: December 28, 2015 (weather permitting)

New Bridge Opening Date: Spring 2017

PennDOT Traffic Cameras

PennDOT has 20 cameras near I-376 Parkway Central (West to East) and 17 cameras near I-376 Parkway East (West to East):
List All PennDOT Cameras

Recent Press & Media Coverage

December 8, 2016 - Replacement of the Beechwood Boulevard (Greenfield) Bridge- Parkway East Closure this Weekend

This weekend will mark the final full closure of the Parkway East for the Beechwood Boulevard (Greenfield) Bridge project. Mosites made significant progress during the last closure. This closure is needed to finish tightening all the connections of the steel and complete the installation of metal decking on the new superstructure. The closure is scheduled to begin at 3:00 a.m. on Saturday, December 10, and will reopen no later than 6:00 a.m. on Monday, December 12.

November 28, 2016 - Planned Closure of the Parkway East this weekend has been POSTPONED

The City of Pittsburgh has postponed this weekend’s planned closure of the Parkway East due to the inclement weather forecasted for Saturday into Sunday. Rain possibly changing to snow along with strong winds forecasted for the site preclude the high steel work planned for this weekend.

The closure has been rescheduled for the weekend of December 9, beginning at 10:00 p.m., Friday and ending at 6:00 a.m., Monday the 12th. During this closure, Mosites and their team will finish tightening all the connections of the steel, install the deck pans over the highway, and perform miscellaneous activities.


The replacement of the Beechwood Boulevard (Greenfield) Bridge is approaching another milestone in the progression of the project.  Last week the massive crane was delivered on 37 semi-trucks and assembled on site, dominating the landscape with its 200 ft. boom.  Also on site are the structural steel elements including the arches delivered in three sections.  Mosites and their team will begin assembling the southern sections of the steel arches over the next couple of weeks.  This work will not impede traffic flow on the Parkway East.  However, on Friday November 4, at 10 p.m., the Parkway East, both inbound and outbound, will be closed until 6:00 a.m, Monday, November 7, to accommodate the placement of the steel arches and decking over the Parkway.  If the weekend is successful, both steel arches will be in place by Monday morning.  Then on Friday November 18, at midnight the Parkway East will be closed again until 6:00 a.m. Monday, November 21, for the placement of the remaining steel elements.  Following this closure, Mosites and their team will finish tightening all the connections of the steel and perform miscellaneous activities, but without impacting Parkway traffic.

August 16, 2016 - Squirrel Hill On-ramp to Westbound I-376 Traffic Stoppages begin Thursday in Pittsburgh

PennDOT District 11 is announcing traffic stoppages on the Squirrel Hill on-ramp to westbound (inbound) I-376 (Parkway East) in the City of Pittsburgh, Allegheny County, will begin Thursday, August 18 weather permitting.

Intermittent, short-term traffic stoppages will occur on the westbound I-376 on-ramp from Forward Avenue in Squirrel Hill weekdays from 7 a.m. to 5 p.m. through Friday, August 26. Minor stoppages will occur as trucks enter and exit the Greenfield Bridge project site.

December 31, 2015 - Parkway East Inbound, Outbound Lanes To Reopen Ahead Of Schedule

The City of Pittsburgh Department of Public Works, in conjunction with PennDOT and Mosites Heavy Construction, have announced that inbound and outbound lanes of I-376 East will reopen today, Thursday, Dec. 31.

Inbound entrances to the Parkway East will begin opening at 2:00 p.m. today. The on-ramp at Exit 74 Squirrel Hill/Homestead will reopen first, then the on-ramp at Exit 77 Edgewood/Swissvale. All inbound lanes should be open and accessible by 3:00 p.m.

December 23, 2015 - Parkway East To Be Closed For Five Days, Greenfield Bridge Demolition Scheduled for Monday

The City of Pittsburgh Department of Public Works, in conjunction with PennDOT and Mosites Heavy Construction, remind commuters that full-lane closures of I-376 East will begin on Sunday, Dec. 27 at 6:00 a.m. The closure is permitted to last until Friday, Jan. 1 at 6:00 a.m. but project officials expect to reopen the parkway sooner, weather depending.

The five-day closure of the Parkway East is necessary to execute the implosion and site cleanup of the Greenfield Bridge. Implosion of the Greenfield Bridge is currently scheduled for Monday, Dec. 28 at 9:00 a.m.


The City of Pittsburgh Department of Public Works, in conjunction with PennDOT and Mosites Heavy Construction, have announced that all lanes of I-376 East (Parkway East) will reopen at 10:00 a.m. today - Sunday, December 13, 2015.

Weather conditions and the week of additional preparation time allowed contractors to be more effective and efficient in performing necessary work. Crews wrapped and drilled 116 holes into the main arch of the Greenfield Bridge that will be loaded with charges at demolition.

December 2, 2015 - UPDATE: Parkway East Weekend Closure Postponed One Week:

The City of Pittsburgh Department of Public Works, in conjunction with PennDOT and Mosites Heavy Construction, has postponed the I-376 East (Parkway East) closures originally scheduled for December 4-6.

The Parkway East closures have been postponed one week. The next weekend closure of I-376 East will take place Friday, Dec. 11 at 11:00 p.m. through Monday, Dec. 14 at 6:00 a.m.

November 16, 2015 - Stretch of Parkway East to close this weekend

The Parkway East will close for two weekends to prepare for the Greenfield Bridge implosion. The outbound/eastbound side of the parkway will be closed from Oakland to Squirrel Hill/Homestead. The inbound/westbound side will be closed from Wilkinsburg/Forest Hills to Oakland. Detours will be posted.

November 10, 2015 - I-376 East Inbound/Outbound Weekend Closures Scheduled

The City of Pittsburgh Department of Public Works, in conjunction with PennDOT and Mosites Construction and Development Company, today announced the following full-lane, weekend closures of I-376 East.

Friday, Nov. 20 - Sunday, Nov. 23
Closed: Friday, Nov. 20 at 11:00 p.m.
Reopen: Monday, Nov. 23 at 6:00 a.m.

Friday, Dec. 4 - Sunday, Dec. 6
Closed: Friday, Dec. 4 at 10:00 p.m.
Reopen: Sunday, Dec. 6 at 5:00 p.m.*

*Project productivity and clear weather could result in an earlier reopening on Dec. 6.

October 12, 2015 - Greenfield Bridge Closure:

The Department of Public Works advises that there will be a closure of the 94 year old, 274 foot Greenfield Bridge between Alger Street in Greenfield to Overlook Drive in Schenley Park to accommodate the reconstruction of a new bridge beginning Friday night, October 16, 2015, at approximately 10:00 p.m. Traffic will be detoured around the bridge with the aid of a posted detour.

Beginning noon on Sunday, October 18, 2015, pedestrian and cycling traffic will be restricted from the bridge. Pedestrians and cyclists can use the Junction Hollow trail via the Alexis Street steps or Saline Street in Greenfield, and Joncaire steps or Joncaire Street in Oakland. Improvements are being made to these routes to better accommodate pedestrians and cyclists.

The Department of Public Works and Public Safety have established regular meetings to prepare for and respond to traffic conditions resulting from the closure. In addition, CMU’s Mobility Analytic Center, a division of its Traffic 21 Institute, has developed a regional model for simulating traffic conditions under varying conditions. This model is being used to assess the potential impacts and possible improvements relative to the bridge closure.

Port Authority Transit Routes including the 52L Homeville Limited / 53L Homestead Park Limited / 58 Greenfield / 93 Lawrenceville-Oakland-Hazelwood have already been rerouted off the bridge. For the new routes go to

September 9, 2015 - Before they blow up the Greenfield Bridge, celebrate its 93-year run at Bridgefest

In late December, the Greenfield Bridge will be imploded—but before it falls to rubble, the deck of this 446-foot arch bridge will be the site of Bridgefest on October 17th, from 4 p.m. to midnight.

“This is the last full day the bridge is open to the public and we’re excited to send it off with a bang,” says Mitch Margaria, president of the Greenfield Community Association (GCA).

When Margaria met with city officials to brainstorm about ways Greenfield businesses could avoid the financial challenges Garfield businesses suffered during the long and agonizing Penn Ave. construction, Bridgefest was born.

Read entire article at

June 17, 2015 - Legal Ad for Project Bids

The City of Pittsburgh, in cooperation with the Pennsylvania Department of Transportation, will be accepting bids, through the Pennsylvania Department of Transportation’s Engineering and Construction Management System (ECMS), for the total replacement of the Greenfield Avenue Bridge. The work will include the implosion of the existing concrete arch bridge and the construction of a steel arch bridge over Interstate 376 (Parkway East).

Read entire article at

February 3, 2015Greenfield Bridge project promises months of disruption, uncertainty

The replacement of the Greenfield Bridge is expected to be completed by spring 2017.

February 3, 2015Greenfield Bridge demolition will cause Parkway East closure – Public meeting on plans, detours will be held tonight

The nearly 100-year-old Greenfield Bridge over the Parkway East is in its last year, and demolition of the span will cause a weeklong closure of the parkway. The bridge is scheduled to close in October and be demolished in December, closing a section of Interstate 376 for the week between Christmas and New Year's Day. A public meeting to review plans for the project, including detours, will be held Tuesday evening at St. Rosalia Catholic Church on Greenfield Avenue from 6 p.m. to 8 p.m.

See More Press Coverage

Community Event: October 17, 2015

The Greenfield Community Association invites you to join Councilman Corey O'Connor, Mayor William Peduto, and Pittsburgh rock legend Joe Grushecky and the Houserockers on October 17, 2015 for a bridge party - a Greenfield Bridge Rock Away the Blues Party - a celebration of the replacement for the bridge but using this once in a lifetime event to provide the to-be-impacted neighborhood businesses with a one-time revenue infusion as well as regional exposure to revitalize existing client relationships and engage new clientele. It will be full of local grown musicians, artists, and performers for both families and adults with Joe Grushecky and The Houserockers headlining the event and the young band Milly, opening the evening..

SPECIAL NOTE: Look to the Greeenfield Community Association’s website ( for announcements of additional program elements.

Saturday, October 17, 2015
Presentation: 4pm - Midnight
Staghorn Home and Garden Cafe
517 Greenfield Avenue

Public Meeting: June 16, 2015

The Department of Public Works will join us in South Oakland to review their plans and detours for the Greenfield Bridge demolition and reconstruction.

SPECIAL NOTE: The Social Hall entrance is on Childs Street.

Tuesday, June 16, 2015
Presentation: 6pm
St. Regis Parish Social Hall
3235 Parkview Avenue

Public Meeting: February 3, 2015

The City of Pittsburgh Department of Public Works, Bureau of Transportation & Engineering will be holding a Public Meeting to review the final plans for the Greenfield Bridge project which will replace the existing structure along with minor roadway upgrades. The new bridge will be constructed on the current alignment following the closure of the existing bridge in October of 2015 and implosion in December.

Tuesday, February 3, 2015
Open House – 6-8pm
Presentation: 6:30pm
St. Rosalia Catholic Church
411 Greenfield Avenue, Wuerl Hall

Download presentation materials from the meeting below.

Ask a Question

Explore some of the most Frequently Asked Questions about the Greenfield Bridge Project.

Read recent press coverage regarding the Greenfield Bridge or follow Oakland Transportation Management Association on Twitter for continuous alerts.

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Greenfield Bridge Project

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Greenfield Bridge Videos: Current Conditions

Videos showing the bridge's current conditions will be available soon. Videos demonstrating detour routes will become available as construction begins.

Greenfield Bridge Demolition from harvey butts on Vimeo.

Greenfield Bridge Project


October 13, 2015.

Below are the most recent vehicular detour maps and also a pedestrian and bicycle alternative routes map for the Greenfield Bridge Project. Each map is accompanied by step by step instructions to assist commuters with clear navigation direction. Click thumbnail for larger image:

Vehicular Detour Maps

Pedestrian and Bicycle Alternative Routes Map

NOTE: Greenfield Bridge is closed to all vehicular, pedestrian and bicycle traffic. Please follow Detours and Alternative Route(s).

Transit Detours

Port Authority of Allegheny will implement bus detours for four (4) transit routes that will be impacted by the closure of the Greenfield Bridge. The detours will be implemented as a regular service change and be reflected in the transit route timetables. This will help transit buses remain on schedule and protect the reliability of the routes for public transit riders.

The impacted transit but detours will start September 6, 2015, six weeks ahead of the anticipated Greenfield Bridge closure. This advanced implementation of the transit detours is due to the Port Authority regular quarterly service change also starting on September 6, 2015. Transit Routes being detoured include: 52L Homeville Limited / 53L Homestead Park Limited / 58 Greenfield / 93 Lawrenceville-Oakland-Hazelwood. Read more . . .

Oakland Smart CommuteVisit Oakland Smart Commute for commuting alternatives like carpooling, vanpooling, bicycling, and walking to help minimize traffic during construction.

Important Schedule Dates


Fall 2013: Start Final Design

Summer 2015: Complete Final Design

Winter 2015: Begin Demolition/Construction

NOTE: Bridge Implosion December 28, 2015 (weather permitting). The Contractor will have a seven (7) day window to close the I-376 Parkway East for five (5) days including charging the bridge, laying 15” percussion buffer (soil), the implosion and clean-up.

Spring 2017: Anticipated Completion


Demolition Information

Demolition Schedule *
Sunday, December 27, 2015: Parkway East Closes (morning)
Monday, December 28, 2015: Bridge Implosion
Friday, January 1, 2016: Parkway East Reopens (morning)

* The demolition schedule is weather permitting and subject to change.

Exclusion Zone

Within 800 feet of the points of implosion (1,000 feet in the valley) specific precautionary measures are recommended for protecting the public and property. Residents and other people within the exclusion zone (outlined on Map) are being asked to remain indoors and away from viewing windows for the blast. People will not permitted on City streets or other public spaces within the exclusion zone during the blast. The potential for flying debris is the biggest concern. The implosion may be delayed if people are outside within the exclusion zone.

Greenfield Bridge Project

Community Meetings

Greenfield Bridge Project

Greenfield Bridge Project Partners

Additional Resources: PennDOT Traffic Cameras | PennDOT Construction Hotline – (412) 429-6035 | Pittsburgh Area Traffic

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