Bridge Collapse: One Year+ Later

Irony? Serendipity? A sign I’ve walked too many bridges? It’s been one year since Pittsburgh’s Fern Hollow Bridge collapsed into Frick Park and another important arterial bridge is now closed and I am once again unable to fully explore due to another foot injury.

Shortly after the Fern Hollow Bridge collapsed, photos of temporary wires holding up the Charles Anderson Bridge supplementing the original metal structure that had rusted all the way through in places peppered social media and made the news with the question of would this be the next bridge to collapse? On February 1, 2023, the Charles Anderson Bridge was “immediately closed” to vehicular traffic (press release). Those with fully functioning limbs are still able to walk or bike across or under the bridge – it passes over another one of Pittsburgh’s major parks (Schenley Park).

The bridge was closed to facilitate interim repairs that may take four months. The bridge has been slated for a full rehabilitation for several years (see the City’s project page for more). The original projection was that this project would be funded this year, but according to a press release from the Mayor’s office on February 2, the expected funds have been delayed until 2027 and the City is looking for ways to expedite the funding.

Also, along the lines of serendipity, I happened to be browsing my copy of Bob Regan’s “The Bridges of Pittsburgh” (2006) this week for unrelated reasons and came across the section “Bridge Disasters.” The section opens with the statement: “Although Pittsburgh area bridges are quite safe and there has been an absence of bridge problems in modern times, this was not always the case.” (page 50) After identifying several of the bridge disasters from pre-modern times (summarized below), he ends this section with “Since that time [1927] there has not been a bridge collapse in the Commonwealth of Pennsylvania and there has never been a collapse of an operating bridge. However, this record was somewhat blemished in late 2005 with the collapse of a portion (one side girder) of a bridge over I-70 near Washington, PA.” (page 51) Of course, any updated version of the book will now have to strike this claim due to the 2022 collapse of the operating Fern Hollow Bridge.

Driving over the new Fern Hollow Bridge this week, it looked in pretty much the same condition as in December with one lane of traffic in each direction and one shared path open. There were several bikers and pedestrians using it while we crossed during the latter part of rush hour.

Bridge disasters highlighted in “The Bridges of Pittsburgh:”

  • 1845 – The original Smithfield Street Bridge burned down
  • 1851 – The 16th Street Bridge burned down
  • 1865 – Two spans of the 16th Street Bridge was washed away in a flood
  • late 1880s – The 6th Street/St. Clair Street Bridge burned down
  • 1903 – The Wabash Bridge collapsed during construction
  • 1918 – The 16th Street Bridge burned down (again)
  • 1921 – The 30th Street Bridge burned down
  • 1927 – The Mount Washington Roadway Bridge collapsed during construction
Charles Anderson Bridge, February 10, 2023

Below are the news updates on the Fern Hollow Bridge and other bridge maintenance and replacement efforts in Pittsburgh and Allegheny County.

  • The proposed artwork for the new bridge is among the elements not yet completed. I didn’t find any new information on this since the NextPittsburgh article of September 26, 2022, that I cited in the December update.
  • PennDOT’s project page regarding the reconstruction of the bridge has not been updated since March 2022, except to add a sentence at the beginning to say that the bridge is now complete and operational, despite the fact that it is not fully open yet due to ongoing work/finishing touches.
  • The National Transportation Safety Board’s ongoing investigation into the Fern Hollow Bridge collapse was updated on January 26, 2023, with details of what has been investigated to date including photos of some of the parts of the collapsed bridge. It also now contains a link to a preliminary docket of materials that have been gathered in the investigation. They are still working out the cause of the collapse and recommendations to prevent such incidents in future.
  • The City created a Commission on Infrastructure Asset Reporting and Investment in March 2022, but this commission has not been added yet to the city’s website listing all Boards and Commissions and I have not seen any announcements of any appointments to the new Commission.
  • Pittsburgh’s Swindell Bridge, which closed from July to September 2022 due to falling debris, is currently under lane restrictions and is expected to close for a month later this year for additional repairs. (Pittsburgh Union Progress, February 12, 2023)
  • The closure of the west sidewalk of the South Negley Avenue Bridge doesn’t phase some people as they by-pass the barriers and continue on their way, in fact one of the barriers had been completely moved aside the last time I drove across the bridge, presumably by someone who found it in their way.
  • The Lincoln Avenue and Fremont Street bridges were closed for repair January 2023 by PennDOT in Millvale, PA – a small town across the 40th Street Bridge from Pittsburgh (WPXI, January 27, 2023)

Map of bridges discussed in the Bridge Collapse series:


Additional Resources:

Both PennDOT and the Federal Highway Administration have interactive maps of bridges for the state and country respective, and their inspection statuses. Pittsburgh now has the static Comprehensive Bridge Asset Management Program Report of the 147 bridges owned by the City of Pittsburgh.

Bridges in Pittsburgh with community engagement pages for pending rehabilitation or replacement projects:


Previous Fern Hollow Bridge Posts:

Eleven-Month Update

Six-Month Update

Five-Month Update

Four-Month Update

Two-Month Update

One-Month Update

Two-Week Update

One-Week Update

Day After

Breaking News

Bridge Collapse: Eleven Months Later

Six months after Pittsburgh’s Fern Hollow Bridge collapse, PennDOT and the Mayor’s office announced that the new bridge would probably open before the end of the year. The ribbon cutting for the new bridge was held on December 21 (Governor Tom Wolf News, WPXI, Pittsburgh Business Times) and the bridge opened to partial traffic the following day. There is one lane of traffic open in each direction and one “shared path” open on the south side of the bridge. Work on the bridge will continue through the spring.

The initial designs showed a bridge designed for highway vehicle traffic with pedestrian and bicycle access tacked on in a thoughtless way. Despite public outcry and professional push-back, the initial designs went primarily unchanged. As the bridge is not fully open, there is a chance that in execution it won’t be as bad as the initial design suggested, but it’s not off to a promising start.

The shared path on the south side – the one that’s now open – connects to sidewalk on the east side of the bridge and to the trails in Frick Park on the west side. There is no existing sidewalk to continue walking along Forbes Avenue to Squirrel Hill. While this path is unusually wide for a bridge, it appeared to be just a sidewalk when I visited it this week. I adopted the term “shared path” based on the videos of the ribbon cutting, which claimed that’s what it is. Perhaps there will be signage added eventually that bikes are also permitted, but I didn’t notice a way for bikes to get up onto this path from the road. While I’m clearly judging this bridge already and finding it wanting, I will continue to monitor its progress and will be open to finding it better than I do now once all the amenities are open and I’m no longer confronted with pedestrian dead end signs.

Below is a slideshow of photos from this month’s traipsing of the bridge followed by the news updates on the Fern Hollow Bridge and other bridge maintenance and replacement efforts in Pittsburgh and Allegheny County.

  • The City announced traffic pattern changes now that the bridge is reopening, breaking up one of the smooth travel paths for vehicles trying to cross the eastern neighborhoods on a north-south axis. (City Press Release, December 22, 2022)
  • The proposed artwork for the new bridge is among the elements not yet completed. (NextPittsburgh, September 26, 2022)
  • For whatever reason, PennDOT’s project page regarding the reconstruction of the bridge has not been updated since March 2022, making it a completely useless resource.
  • The National Transportation Safety Board’s ongoing investigation into the Fern Hollow Bridge collapse was last updated in May 2022, but this was initially described as a long-term effort.
  • The City created a Commission on Infrastructure Asset Reporting and Investment in March 2022, but this commission has not been added yet to the city’s website listing all Boards and Commissions and I have not seen any announcements of any appointments to the new Commission.
  • WSP USA released it’s Comprehensive Bridge Asset Management Program Report of the 147 bridges owned by the City of Pittsburgh – lots of work needs to be done on Pittsburgh’s bridges. (City Press Release, December 22, 2022; Tribune Review, December 21, 2022; WPXI, December 22, 2022)
  • The City of Pittsburgh’s 2023 Capital Budget includes limited funding for bridge repair and maintenance. (Public Source, December 5 & 22, 2022)
  • The bridge Port Authority closed to repair shortly after the Fern Hollow Bridge collapse, and then had to re-repair in July, seems to be okay now.
  • On July 1, Pittsburgh’s Swindell Bridge was closed due to falling debris. It reopened on September 1. (City Press Release, September 1, 2022; CBS, September 1, 2022; WPXI, September 1, 2022)
  • The Finland Street Pedestrian Bridge underwent an emergency demolition on October after being struck by a crane attempted to pass underneath. (City Press Release, October 7, 2022; City Press Release, October 8, 2022)
  • The City of Pittsburgh announced in November that it was going to close the east sidewalk on the South Negley Avenue Bridge (one of the bridges that the public is concerned about its highly deteriorate appearance) out of an “abundance of caution” to accommodate repairs, however, it was the west sidewalk that ended up closing. (City Press Release, November 23, 2022)
  • A public hearing was held on the Davis Avenue Bridge Reconstruction project in September. (City Press Release, September 28, 2022)


Additional Resources:

Both PennDOT and the Federal Highway Administration have interactive maps of bridges for the state and country respective, and their inspection statuses.


Previous Fern Hollow Bridge Posts:

Six-Month Update

Five-Month Update

Four-Month Update

Two-Month Update

One-Month Update

Two-Week Update

One-Week Update

Day After

Breaking News

Bridge Collapse: Six Months Later

There was a lot of news about the bridge this month. PennDOT and the Mayor’s office held a press conference on Monday to announce that the bridge may be completed before the end of the year. This unusually fast pace is because construction is underway while the design is still being worked out. Inspired by the event, I went to Frick Park after work and explored the view of the bridge from the northern approach along the Tranquil Trail.

While the news is good for the Fern Hollow Bridge reconstruction, there were hiccups this month on the Swindell and Port Authority bridges.

Below is a slideshow of photos from my hike this month followed by the news updates on the Fern Hollow Bridge and other bridge maintenance and replacement efforts in Pittsburgh and Allegheny County.

  • The beams for the new Fern Hollow Bridge are being delivered to the site two per day, generating excitement on news and social media. (WTAE video of the first beam delivery, July 26, 2022; CBS article and video, July 25, 2022)
  • Two artists were selected to provide artwork for the new Fern Hollow Bridge (City Press Release, July 25, 2022)
  • Despite the press conference, artist announcement, and beam delivery schedule, there are no new updates on PennDOT’s project page regarding the reconstruction of the bridge.
  • Similarly, no new updates have been posted regarding the National Transportation Safety Board’s ongoing investigation into the Fern Hollow Bridge collapse.
  • The City created a Commission on Infrastructure Asset Reporting and Investment in March 2022, but this commission has not been added yet to the city’s website listing all Boards and Commissions and I have not seen any announcements of any appointments to the new Commission. However, there was a press release this month asking for applicants interested in serving in any of the city’s boards and commissions.
  • WSP USA was selected to manage the City’s new Bridge Asset Management Program. (Tribune Review, July 19, 2022)
  • On Tuesday, Port Authority found a crack in one of the rails on the bridge that was just repaired. The inbound T service was discontinued for two days to enable the replacement of this portion of track.
  • On July 1, Pittsburgh’s Swindell Bridge was closed due to falling debris. The falling debris was noticed during the first phase of repairs, which was repaving the road. (City Press Release, July 1, 2022) The subsequent inspection found that the debris came from the repairs – material accumulated in one of the drainage troughs, putting unusual pressure on the trough and causing it to “tear open and spill” the debris onto route 279 – hours after I had driven under it. (City Press Release, July 5, 2022)


Additional Resources:

Both PennDOT and the Federal Highway Administration have interactive maps of bridges for the state and country respective, and their inspection statuses.


Previous Fern Hollow Bridge Posts:

Five-Month Update

Four-Month Update

Two-Month Update

One-Month Update

Two-Week Update

One-Week Update

Day After

Breaking News

Bridge Collapse: Five Months Later

My foot is finally healed enough for me to begin to explore the site of the bridge collapse over Fern Hollow in Frick Park. I started at the Frick Environmental Center and explored the western slope into the hollow looking for gaps in the trees to see the progress on the bridge construction. The Clayton, Biddle, Bradema, and Tranquil trails all provided glimpses of the bridge site. According to the Hiking Project’s website, the elevation change between the highest and lowest points I encountered was 250′ and the steepest grades were between 13 and 16%.

It was pleasant hiking through the leafy forest, but the foliage hid most of the bridge site. From what I could see through the gaps in the leaves, construction seems well on its way with the four primary support columns erected. In future updates (barring further injury), I will explore the views from the park along the eastern slope and the northern trails.

Below is a slideshow of photos from this exploration followed by the news updates on the Fern Hollow Bridge and other bridge maintenance and replacement efforts in Pittsburgh and Allegheny County.

  • There are no new updates on PennDOT’s project page regarding the reconstruction of the bridge since my post last month.
  • Similarly, no new updates have been posted regarding the National Transportation Safety Board’s ongoing investigation into the Fern Hollow Bridge collapse.
  • The City created a Commission on Infrastructure Asset Reporting and Investment in March 2022, but this commission has not been added yet to the city’s website listing all Boards and Commissions and I have not seen any announcements of any appointments to the new Commission.
  • The RFP is now closed for the Bridge Asset Management Program that Mayor Gainey announced in early May. (Bidnet.com)
  • Port Authority’s bridge has been repaired and is back in service. The stop upgrades to the stations in Beechview and Dormont have reached a point where they have reopened to use, though repairs (including morning jackhammering) continue.
  • Earlier this month, Public Source published an article revisiting the first four months after the bridge collapse. From this article, I learned that the City has launched a separate investigation into the collapse, that the overworked and understaffed Department of Mobility and Infrastructure will need more staff and resources to implement better bridge management in the city, and that a table of the status of Allegheny County’s poor condition bridges was released in February shortly after the Fern Hollow Bridge collapse.
  • The Campbell’s Run Road bridge replacements identified in the County’s list of poor condition bridges are indeed happening this year. I have gotten caught up in traffic congestion caused by the detour for the work several times. (WTAE, February 3, 2022)
  • Pittsburgh’s Swindell Bridge is one that has been on the radar since the collapse of the Fern Hollow Bridge. The City announced this week that a first phase of repairs will be conducted over the next couple weeks. This initial phase consists of repaving the road surface. (City Press Release, June 24, 2022)


Additional Resources:

Both PennDOT and the Federal Highway Administration have interactive maps of bridges for the state and country respective, and their inspection statuses.


Previous Fern Hollow Bridge Posts:

Four-Month Update

Two-Month Update

One-Month Update

Two-Week Update

One-Week Update

Day After

Breaking News

“Poor Condition” Forbes Ave Bridge Collapsed Yesterday

Yesterday, after the Fern Hollow Bridge collapsed in Pittsburgh a photo circulated on social media of one of the steel support beams of the bridge completely rusted through. This photo was taken in 2018 and reported to the City’s 311 system. While the photo also showed cables that had been added to the bridge to presumably take over the job of the steel beam that then ended in mid-air, the person submitting the photo was concerned that this might not be sufficient. I have seen similar rusted conditions on other bridges that I have walked over or under in Pittsburgh. I cannot remember if it was the Negley Ave bridge over the busway, the Charles Anderson Bridge over Junction Hollow in Frick Park, both, neither, or a handful of other bridges. (Note: both of these bridges are rated in poor condition.)

A neighbor quoted in a Tribune Review article after the Fern Hollow Bridge collapse wondered why the bridge hadn’t been repaired or replaced before the accident since it was known to be in poor condition. According to BridgeReports.com, which pulled inspection data on the bridge from 1991-2017, the bridge has been rated as in poor condition since 2011. Based on my experiences and exposure to bridges, I am not surprised that a bridge was left in poor condition for over a decade. This morning, I pulled data from the National Bridge Inventory on the 449 inventoried bridges within a 6-mile radius of downtown Pittsburgh. I was surprised to find that only 10% of these bridges were rated in poor condition.

Below is a chart of the 48 bridges rated in poor condition within a 6-mile radius of downtown, which includes some that are outside the boundaries of the City of Pittsburgh. In those cases, the city owner would be the municipality they are within. The first four columns are the data I pulled from the National Bridge Inventory, the final column is from BridgeReports.com. Both sources were updated through 2018, which means that there have been some changes since then, including the possibility that more bridges have fallen into a poor state. I marked in italics the bridges that I am heard went through renovations in recent years and in bold the one that collapsed. The bridges with hyperlinks are the ones that I have walked and blogged.

OwnerBridge DescriptionYear BuiltYear RenovatedRated Poor Since
StateIsland Avenue Bridge1900
StateWetzel Rd over Pine Creek1936
StateBlvd of Allies over cliff19502018
StateBlvd of Allies over Forbes195219842017
StateRamp U over Old Brady St195419852013
StateRamp R over Brady195619852017
StateRamp H over Forbes, Diamond, 6th Ave196220121997
StatePeoples Rd over Girtys Run1963
StateWashington Ave over P&O RR1965
StateFt Duquesne to 10th St19681988
StateBlvd of Allies over another cliff198120012018
RailroadWest Ohio St over NS RR190319581991
RailroadN Ave & Brighton Rd over NS RR190519292009
County9th Street – Rachel Carson Bridge192619942013
CountyJacks Run Rd over Jacks Run19802019
CountyWible Run Rd over Wible Run1987
CitySecond Ave over Nine Mile Run1886at least 1991
CityShaler St over Saw Mill Run1900at least 1991
CityLowrie St over Rialto St190019722008
CityElizabeth St over Gloster St190019792014
CityRidge Ave over NS RR19031957at least 1991
CityTimberland Ave over Saw Mill Run1909at least 1992
CityFremont St over Girtys Run1911
CityLincoln Ave over Girtys Run19111950
CityLarimer Ave over Washington Blvd1912at least 1991
CityGrant Ave over Girtys Run19141986
CityKlopper St over Girtys Run1915
CityLincoln Ave over Girtys Run19151986
CityFrazier St over Saline St191519892007
CityS Negley Ave over E Busway19241973at least 1991
CityW Carson St over Chartiers Creek192519782009
CityAnsonia Pl over Saw Mill Run192519981995
CityMaple Ave over N Charles St19291953at least 1991
CitySwindell Br over East St193019902009
CityCalera St over Streets Run1931at least 1991
City28th St over Busway & RR19311974at least 1990
CityE Main St over Chartiers Creek19342002
CityCharles Anderson Bridge193819872012
CityMission St over S 21st St193919822010
CityRiver Ave over Bike Trail193919862008
CityGanges Way over Streets Run19512016
CityE Liberty Blvd SB over walkway19682009
CityForbes Ave over Fern Hollow19702011
CityHerron Ave over Busway & RR19802018
CityMcArdle over Sycamore St19832017
CityMilroy St over I-27919862011
Other Local AgencyCentre Ave over East Busway19792008
Other Local AgencyPenn Ave over East Busway19812018