Collapsed James Street Bridge over Oswego Blvd in Syracuse, NY

(Satellite, Oswego Blvd. covered up the canal, and then I-690 covered up Oswego Blvd.)

Erie Canal Overview

Matt Korona posted
James Street Bridge collapse over the Oswego Canal in Syracuse

cnyhistory
"On April 6th, 1901 the James Street Bridge over the Oswego Canal collapsed. A trolley car carrying around 40 people was crossing the bridge at the time and fell front first into the mud and debris. Fortunately, the water in the canal had been emptied a week earlier, presumably for repairs. Thirty-seven people were injured, some seriously, but remarkably no one was killed."

1924 US-66 Lake Overhosere Iron Bridge over North Canadian River at Bethany, OK

(Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)

US-66 Overview

Street View, May 2025

Tony Gaeddert, Oct 2022

Terri, Apr 2022

John Albert Christeson Jr. posted three photos with the comment: "Lake Overholser Iron Bridge on Historic US 66.........Bethany Ok"

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1929+1995 US-89A Navajo Bridges over Colorado River at Marble Canyon, AZ

1929: (Archived Bridge Hunter; Bridge Hunter; Historic Bridges; Satellite)

1995: (Archived Bridge Hunter; Bridge Hunter; Satellite)

The replacement bridge is in the foreground. The 1929 bridge is now a pedestrian bridge.

Boat View, Aug 2013

The 2018 Street View below this photo shows that we are facing West. So, the bridge on the right is 1929, and the one on the left is 1995.

Fabrizio (imagea), Dec 2025

Street View, May 2018

The old bridge was narrow.

Panedia, Apr 2015

The length and width of the old span is 616' (187.7m) and 18' (5.5m). [BridgeHunter_1929]

The length and width of the new span is 725.8' (21.2m) and 44' (13.4m). [BirdgeHunter_1995]

Bruce LaFrance posted three images with the comment:

NAVAJO BRIDGE 

The bridge spans Marble Canyon, 470 feet [143.3m] above the Colorado River in Grand Canyon National Park and was considered the highest steel arch bridge in America when completed. The 750-foot-long steel bridge includes a 616-foot, three-hinged spandrel arch main span. It replaced Lees Ferry as the sole crossing of the Colorado River within a distance of 600 miles. The bridge was functional for the era in which it was constructed. However, its load capacity of 22.5 tons and width of just 18 feet failed to serve the needs modern vehicles. Studies began in the early 1990s to determine the best solution to the problem. Consideration was given to strengthening the bridge, but the costly option was deemed impractical. Several alternate sites were considered, but the final decision was to build a stronger and wider parallel bridge beside the existing structure. The NEW bridge was completed in 1995 and the original structure remains in service as a pedestrian crossing.

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A view looking East. The 1929 bridge is on the left.

Paul Jameson commented on Bruce's post

NS/NKP Bridge over Auglaize River

(no Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)

Street View, May 2025

Big Boy 2026:

This is another example of a valve being opened near the back of the locomotive while it is over water. I think they do that to flush any sediment out of the boiler. The train was going slow. I don't know if that is because of the bridge or if it is to have plenty of time to flush the boiler.

Facebook Reel

1840 Hocking Canal Oldtown Culvert in Logan, OH

(Satellite)

Joe Trammell, May 2021

RJD, Jan 2022

Jamie Danger, May 2026

At 85' (26m), this crossing was twice as wide as the canal. Normally, an aqueduct is not as wide as the canal, they are typically as narrow as a lock. But the builders considered this to be a culvert, and they are as wide as the canal to avoid a bottleneck that might create a traffic jam. But why is it twice as wide? Probably because the canal crossed the creek at an angle.

8:45 @ 5:28
The Aqueduct That Isn't - Ohio's Hocking Canal's Old Town Aqueduct!

1879 Shoults/Girl Scout Camp Road Bridge over Wakatomika Creek near Martinsburg, OH

(Archived Bridge Hunter; Bridge Hunter; Satellite)

"Built 1879, rebuilt on rolled steel beams in 1974" [BridgeHunter]

Teresa Marty posted five photos with the comment:

Licking County, Ohio

Shoults covered bridge,  built 1879. 

Restored 2024.

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It did need restoration.

2014 photo by Chad Wilkins via BridgeHunter

2014 photo by Bill Eichelberger via BridgeHunter

1936,1983-2026 US-6+US-19 Bridge over French Creek near Meadville, PA

(Archived Bridge Hunter; Bridge Hunter; Historic Bridges; Satellite)

US-6 Overview

Street View, Aug 2025

2010 photo by Jason Smith via BridgeHunter

2004 photo by Todd Wilson via Bridge Hunter

HistoricBridges
The span lengths are 149' (45.4m).

Photos By Ferg posted four photos with the comment: "3-2-1 BOOM! They blew up the old bridge today on route 19 between Meadville and Saegertown. I will post pictures of them removing the steel beams next week."

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Sinkhole closes I-44 and part of I-70 in St. Louis, MO

(Satellite)

If that hole had opened a little to the West, cars on Broadway might have fallen into it. If it opened up a little to the South, the pylon for I-44 would have been exposed.

reddit
Avoid I-44 in Downtown St. Louis. A huge sinkhole has opened up under the interstate bridge. This section will be closed until further notice.

KMOV posted
The St. Louis Metropolitan Police Department shares a map showing the routes that will be closed due to the sinkhole that formed on Broadway and Biddle.

If they had so much water leaking that it eroded a hole that big, why didn't the water department notice that the flow was way too high and dispatch someone with ground penetrating radar to find the hole while it was much smaller?

FirlstAlert4
"Multiple water main breaks caused a sinkhole to form near Highway I-70.(KMOV)"
"This caused a sewer washout, leading to the collapse of a 12″ and a 10″ main into the excavation site."
"Crews are working to address what is likely a failing valve. The water division said there is no timeline for when this will be repaired." [The tank that almost exploded in California because of a bad valve and this incident tells me that valves should be periodically tested.]
Water main breaks have become more frequent as the water district has accumulated $700m of deferred maintenance needs.

Facebook Reel

The hole is getting close to the pylon on the other side of the interstate.

Facebook Reel

A couple of days later the St. Louis water division says They're still working to figure out why the collapse happened. They are trying to dig down to the sewer, but it is 35' down. Fortunately, the sides of the hole are no longer sloughing off.

Facebook Reel

NS/NKP Trestle over Chautauqua Creek in Westfield, NY

(Archived Bridge Hunter; Bridge Hunter; no Historic Bridges; Satellite)

Street View, Aug 2013

Big Boy 2026:

Brian R. Wroblewski posted five photos with the comment: "Some shots from Westfield around 12:45 this afternoon[June 9]..."

[The smoke is rather clear.]

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[The two diesels are not providing motive power, they are providing dynamic braking.]

Park Avenue Viaduct Replacement in New York CIty (NYC)

(Satellite, the viaduct is being replaced between here (115th Street) and 132 Street.)

Facebook Reel

Same Reel

Same Reel

MTA
"The MTA is repairing or replacing portions of the Park Avenue Viaduct between East 115 and East 132 Streets....The Park Avenue Viaduct is the elevated steel structure that carries four Metro-North Railroad tracks along Park Avenue between E 110 St and the Harlem River Lift Bridge."

Before:

Street View, Aug 2024

After:

MTA, this webpage has some photos of the existing viaduct and some videos of the replacement activity

A renovation was completed in 1999.

bechtel
"At the time of the rehabilitation, it carried nearly all Metro-North trains into and out of Grand Central Terminal — carrying approximately 600 trains and 160,000 passengers daily.... Modernizing the steel structure involved replacing the deck, upgrading support structures, and improving track geometry — all while keeping trains and commuters moving. With three of the four tracks remaining active during rush hour, space for construction was extremely limited. At times, it required the team to carefully coordinate the movement of 500 tons of steel in an area no larger than 4,000 square feet. Despite these constraints, Bechtel completed the six-year effort on schedule."

I noticed the Mi-Jack brand on the wheeled gantry cranes in the reel screen views at the top of these notes. I recognize that name as the wheeled gantries that are used to move containers in some railroad intermodal yards.

mi-jack, there are a couple of videos on this webpage.
" Working with the MTA, Halmar International used prefabricated construction and two custom 200-ton Mi-Jack RTG cranes to efficiently replace aging viaduct sections in active rail territory – resulting in Phase I finishing $93 million under budget and 21 months ahead of schedule....Spanning 1.25 miles and serving the Hudson, Harlem, and New Haven lines, the structure is a critical link for daily commuter travel – leaving no margin for extended outages or construction delays during replacement work. During Phase I, crews replaced 8,240 feet of track across 128 bridge installations, which required lifting and positioning 190,000-lb bridge sections. Mi-Jack’s custom 200-ton gantry cranes enabled crews to efficiently lift out old steel and concrete deck segments and install prefabricated replacements within tightly controlled work windows, minimizing disruption of commuter services....Measuring approximately 30’L x 50’H x 98’W, the machines required a complex erection procedure due to the need to straddle one of the busiest rail corridors in the Northeast to perform bridge replacement."

Why didn't they replace the viaduct between 123rd and 127th Streets? That would have saved them the expense of moving the gantry cranes.

mi-jack
"Following the successful completion of Phase I, which replaced the viaduct from East 115th Street to East 123rd Street, Phase II is now underway. This next phase will focus on replacing the viaduct from East 127th Street to mid-block between East 131st and East 132nd Streets, with completion expected in 2027. To begin Phase II, the two Mi-Jack MJ200HD cranes had to be disassembled and relocated to East 128th Street – a complex operation requiring smaller cranes to lift and move the components. The top beams alone measure 94 feet in length and weigh approximately 83,000 pounds."

ConstructionDive
"The $590 million first phase, of which $500.9 million stemmed from federal funds, replaced the viaduct’s full substructure and superstructure between East 115th and East 123rd streets."
[So, the estimate must have been $683 if there was a $93m savings.]

Environmental impact studies continue to be a growth industry.

stvinc