Most mainline switches (exiting off itself) for a numbered freeway route?

[flowmotion]

Ah ok, but that kind of split is pretty common. It will be a long list.

[Anthony_JK]

I-10 in Baton Rouge exits itself as the mainline becomes I-12, at the New Orleans line it exits itself as the mainline becomes I-610, 3 miles later it exits itself again as the mainline becomes U.S. 90 Business, once in Slidell it exits itself one more time at the interchange with I-59.

I wouldn't consider the 10-12 Split a TOTSO myself, since it fits with proper traffic flow (left lanes exit to I-12, right-lanes stay on I-10).

The 10-110 Split in BR, on the other hand, is the Mutha of ALL TOTSO's...not to mention that one of the "through lanes" ultimately becomes the Washington Street exit. Never liked that setup at all, and would love LaDOTD to consider a total redo of that interchange (similar to what is now at I-10/US 69 in Beaumont).


Anthony

[agentsteel53]

Mutha of ALL TOTSO's...

I've always considered I-95 cloverleafing off itself without even a continuing through route in Canton, MA to win that prize.

[Alps]

Mutha of ALL TOTSO's...

I've always considered I-95 cloverleafing off itself without even a continuing through route in Canton, MA to win that prize.

That's been a trumpet for some time, now. How about I-278 following a one-lane exit onto a PARKWAY, forcing trucks to exit?

[agentsteel53]

That's been a trumpet for some time, now. How about I-278 following a one-lane exit onto a PARKWAY, forcing trucks to exit?

really?  shows how long ago I last took that exit.  I believe in 2006 it was still the old self-clover.

I-278 is the Mutha of all terribly executed interstates in general.

[roadman65]

I- 83 does this twice in PA.  It used to be 3, but the Business I-83 ramp interchange in York has been reconfigured.

I-83 SB exits itself at PA 581 in Camp Hill, PA.
I-83 SB exits itself at I-283.

In Maryland, you have it exit in both directions off of I-695, where it briefly duplexes with the Baltimore Beltway.

[ftballfan]

Northbound US-31 does it twice in Michigan; the first is at Napier Ave east of Benton Harbor (disputed case, as the pavement is unused beyond that interchange) and the second is at US-10 east of Ludington (US-31 exits off to the right as the road straight ahead feeds into WB US-10). And to make it stranger: Both exits are numbered (Exit 24 in Benton Harbor; Exits 170AB in Ludington)

I-496 in Lansing (at US-127/Trowbridge) is another example.

I-69 at both ends of its concurrency with I-96.

EB I-96 just past Alpine Ave in Walker/Grand Rapids veers off to the left while (unsigned) I-296 goes straight.

[bdmoss88]

I-85 will probably do this in Montgomery when/if the southern loop is finished.

[NE2]

I-465 does this over and over again as you go counterclockwise.

[PurdueBill]

That's been a trumpet for some time, now. How about I-278 following a one-lane exit onto a PARKWAY, forcing trucks to exit?

really?  shows how long ago I last took that exit.  I believe in 2006 it was still the old self-clover.

I-278 is the Mutha of all terribly executed interstates in general.

If you are staying on 95 NB you do use what was built as a cloverleaf ramp; the cloverleap ramp from then-128 NB to 95 SB had a nasty weave with that one and it was replaced with a trumpet ramp some time ago.  So maybe you can both be considered right--the ramp to stay on 95 NB was built as a cloverleap loop and is now the inner 270° loop of the trumpet.  The other loop on the same side of 128 was replaced by the outer trumpet ramp (now I-93 SB to I-95 SB).

[bugo]

I-44 in OKC exits off itself several times.

It also exits off itself westbound at US 412 and the Creek Turnpike in Catoosa.

[roadman65]

I-95 in Fort Lee, NJ does it if you are using the Upper Level on the GWB and heading to the Local Lanes.  It takes a left exit into a one lane down grade at the NJ 4 diverge with NJ 4 taking all of the I-95 lanes and leaving you exit to the left.

When I was a small child, I used to often wonder what that was about as I would see my dad traveling a straight through freeway and then pass through this one lane ramp and then merge with the same roadway we were just on so to speak.   I then learned that I-95 upper level is designed in both directions for the Upper Level Bridge and the Express lanes  of I-95 & eventually I-80 to default into each other.  In fact there is no access to the lower level of the GWB from I-95 NB Express lanes whatsoever.  However, the the SB Upper Level does at least have this one lane left exit right after the Express- Local split where it is 50/50 in travel lanes, but nonetheless still designed for more traffic to use the I-95 Express lanes or NJ 4 WB from that level.

[CNGL-Leudimin]

Wow, I-35W in the Twin Cities survives through all apparent TOTSOs. Without counting both splits, I counted a grand total of four mainline switches on southbound I-35 and another four on northbound, all located on the central section.

[Thing 342]

I-240 (NC) arguably does this twice, with TOTSOs at US-19/23 and future 26.

[cpzilliacus]

Interstate 95 is the one route I think does this quite a bit:

- I-495 in Virginia (southbound, this has become a left-hand continuation, but it may have been a true all-right-exit switchover at one point)

It was once right-hand "exits off" for northbound and southbound at the Springfield Interchange.  The massive reconstruction there changed that.  Remember that present-day I-395 was once signed as I-95 before it was cancelled between New York Avenue, N.W. in D.C. and the Capital Beltway.

- I-495 in Maryland (I think this may have been intended as a southbound left exit even before 95 into DC was canceled)

No, southbound it was an "exit off" to the right originally, or continue straight ahead and then a near-"U" turn, where the park-and-ride lot and truck weigh inspection station are now located.  Those are still there, but the main movement is now to the left on a flyover built years after the interchange.  Northbound, I-95 traffic has always exited off the Outer Loop of the  Capital Beltway.

- I-895 in Rosedale, Maryland north of Baltimore

Not any longer.  Southbound I-895 now exits on the right, and I-95 goes straight ahead (to the left) - GSV here.  Even northbound, where there are no exits, I-895 traffic now enters I-95 on the right.

- not sure if I-395 in Groton, Connecticut counts (as I-95 continues southbound along left side)

I-95 goes to the right, presumably because I-395 (the Connecticut Turnpike) continues  straight ahead.  But because I-95 is only two lanes approaching, it does not seem to cause too much of a problem.

- I-93/Route 128 in Dedham, Massachusetts

Northbound is effectively not changed since the interchange was constructed except for a massive flashing yellow arrow just before the (sharp) loop ramp where I-95 exits off itself.