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.

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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.]