Former one-way couplets, of which one or both of the streets are now two-way

[epzik8]

Route 213 in Centreville, Maryland appears to have temporarily done this for a time on Commerce Street.

[tradephoric]

It's interesting the take Jon Orcutt had when discussing dangerous intersections in NYC for a 2023 NY Times article titled "When a Walkable City Becomes a Death Trap".  Jon's take goes against conventional wisdom, but as the article states he was instrumental in drafting the Vision Zero Action Plan a decade ago for NYC.  He singles out the big two-way streets as being dangerous...

"These big streets running two lanes in both directions," said Jon Orcutt, a consultant who served as policy director for the Department of Transportation during the Bloomberg administration, "are really the killing fields of the city."

Mr. Orcutt was instrumental in drafting the Vision Zero Action Plan, one of Bill de Blasio's first major initiatives, a plan set in motion in 2014 that sought to eliminate traffic fatalities entirely within 10 years. The goal was established after an especially tragic period; the city counted 299 deaths in 2013, and one in particular left an enduringly chilling imprint. Sammy Cohen Eckstein, a 12-year-old boy weeks away from his bar mitzvah, was retrieving a ball that had rolled onto Prospect Park West one fall afternoon when he was struck and killed by a Chevy van.

https://www.nytimes.com/2023/04/28/nyregion/traffic-deaths-nyc-vision-zero.html

[roadman65]

Main and Lemon Streets in Lakeland, FL were a couplet and were former Business US 92. Now both two ways after FDOT built SR 548 to bypass Downtown.

South and Anderson Streets in Orlando between Orange and Division Avenues when the I-4 reconfiguration took place and changed the ramps off I-4 to and from South/ Anderson.

Irving and Main Streets in Downtown Rahway, NJ were a couplet and now a couple of two way streets.

US 1 and SR 5 in Palm Beach County, FL. US 1 was the original SB US 1 while SR 5 was NB US 1.

[vdeane]

It's interesting the take Jon Orcutt had when discussing dangerous intersections in NYC for a 2023 NY Times article titled "When a Walkable City Becomes a Death Trap".  Jon's take goes against conventional wisdom, but as the article states he was instrumental in drafting the Vision Zero Action Plan a decade ago for NYC.  He singles out the big two-way streets as being dangerous...

"These big streets running two lanes in both directions," said Jon Orcutt, a consultant who served as policy director for the Department of Transportation during the Bloomberg administration, "are really the killing fields of the city."

Mr. Orcutt was instrumental in drafting the Vision Zero Action Plan, one of Bill de Blasio's first major initiatives, a plan set in motion in 2014 that sought to eliminate traffic fatalities entirely within 10 years. The goal was established after an especially tragic period; the city counted 299 deaths in 2013, and one in particular left an enduringly chilling imprint. Sammy Cohen Eckstein, a 12-year-old boy weeks away from his bar mitzvah, was retrieving a ball that had rolled onto Prospect Park West one fall afternoon when he was struck and killed by a Chevy van.

https://www.nytimes.com/2023/04/28/nyregion/traffic-deaths-nyc-vision-zero.html

"These big streets running two lanes in both directions" sounds like the large arterials.  In this case, the problem is that they're wide and have lots of high-speed (relative to the city streets) cars, not that they're two-way.

[tradephoric]

"These big streets running two lanes in both directions" sounds like the large arterials.  In this case, the problem is that they're wide and have lots of high-speed (relative to the city streets) cars, not that they're two-way.

But there are plenty of wide one-way streets throughout NYC.  Why didn't Jon focus on the dangers of the wide one-way streets throughout NYC?  Interesting how he didn't bash on the big one-ways in the article...

[Dirt Roads]

Lynchburg, Virginia, reverted its Main Street/Church Street one-way pair back to two-way streets back about 4 years ago.  It took three phases to complete the effort, and in a twist-of-fate, the north/south Seventh Street was reverted back to one-way as part of the project (making it a one-way pair with Sixth Street, which had remained one-way).

Double whammy!  As part of the same project, a short section of Eighth Street was also reverted back to one-way just in the steep uphill section between Commerce and Church.  But only a year or so later, Eight Street flip-flopped back to two-way and remains that way.

[Great Lakes Roads]

Another one here in Indiana: West Lafayette on State Street/Mitch Daniels Boulevard and Wood Street (both former SR 26)

[Dirt Roads]

In the historic section of Charleston, South Carolina, it is also historic that Spring Street and Cannon Street operated as a one-way pair.  Much of those streets reverted back to two-way operation back about 6 years ago.  Except for the part that most of us are familar with, that is the section where I-26 ends multiplexed with US-17 turning into Clark Parkway, which dumps onto the west end of Spring/Cannon (as a one-way pair arterial).

[DandyDan]

One other one in Omaha: Cuming and Burt Streets were a one-way couplet going east from 30th Street through its interchange with the North Freeway. When the I-480 interchange with the North Freeway was rebuilt, and probably also in conjunction with when what's now Charles Schwab Field was built, which was 2011, Cuming and Burt became two-way.