Almost Multi-State State Highways

[Revive 755]

How many state routes are/were there that could have been a continuous multi-state route had they been extended to the state line with one or more multiplexes?

Historical MO - IL
* MO 140 - IL 140 in the Alton - West Alton area:  Would have required multiplexes with US 67 and IL 143
* MO 79 - IL 79 around Hannibal:  Would have required a multiplex with US 36

[mightyace]

^^^

I wouldn't mind knowing how many miles those multiplexes are.

[kharvey10]

I thought MO 140 used to be Lindbergh Blvd. back in the 1960s, and the old Clark Bridge IL approach started at Broadway and 3rd in Alton.

[Quillz]

CA-28, CA-88 and CA-266 could all be considered multi-state routes.

CA-139 continues on as Oregon 39, so it's "almost" a multi-state route.

And because many Canadian highways, especially in the western provinces, use U.S. Route numbers, they could almost be called multi-national highways.

[MDOTFanFB]

IN 120 and OH 120 can be considered "almost" multi-state routes, since the road connecting the two is in Michigan.

M-239 is a continuation of IN 39, so it can also be considered an "almost" multi-state route.

[rawmustard]

IN 120 and OH 120 can be considered "almost" multi-state routes, since the road connecting the two is in Michigan.

That road connecting the two used to be M-120.

[xonhulu]

CA-139 continues on as Oregon 39, so it's "almost" a multi-state route.

It would have been cool if OR 39 was OR 139, as its duplex with OR 140 would then consist of consecutive numbers.  However, I think OR 39 preceded CA 139; I'll have to check my old maps.

[TheStranger]

It would have been cool if OR 39 was OR 139, as its duplex with OR 140 would then consist of consecutive numbers.  However, I think OR 39 preceded CA 139; I'll have to check my old maps.

Route 139 apparently was signed by 1955:
http://members.cox.net/mkpl2/hist/mp55-northhalf.jpg

[agentsteel53]

I see 161 is not yet signed on that map.  there is still an old Auto Club sign on an old 139 alignment that dates to 1947.  that may be the year that 139 was first signed, as the old sign's destinations match nicely with CA-139/OR-39's routing.

[Quillz]

Seems that map also does not show the southern half of CA-139 between CA-36 and (then) US-299. So that must date to several years later.

[Alps]

NJ 208 was intended to connect to NY 208, but that was an unbuilt roadway as opposed to a multiplex. You have MD 23 and PA 23 quite close, although it's MD 24 (!) that connects to PA 23.  Can't figure that one out. DE 48 and NJ 48 used to connect via ferry - now would require a multiplex down either side to the Del Mem Bridge. Del 3 could continue up to 491, over to 202, up to PA 3 and into Philly.

[Kacie Jane]

WA 20 could qualify. The eastern end is only a few blocks from the Idaho state line, and ID 200 (itself a multi-state route) used to be multiplexed with US 2 to the state line.  The distance between the two ends now is about 30 miles.

[Michael in Philly]

Pa. 100 used to connect to Del. 100 (in fact, Delaware - which was late to number its state highways, so Pennsylvania's were already there when they did so - seems to have systematically just continued Pennsylvania numbers when a Pennsylvania highway ended at the Delaware line).  But the segment between the state line and US 1 is no longer numbered.

[hbelkins]

Wouldn't be too hard to get KY 7 and OH 7 to connect.

And WV 7 is carried on an Ohio River bridge that connects to OH 7 on the Buckeye side.

Build a bridge across the Mississippi River, and you could connect KY 80 (which does connect to VA 80) with MO 80. I have driven all of this multi-state route in both states; the easternmost miles in Virginia are an adventure and that route really ought to be a state secondary 600-series route instead of a state primary route.

[TheStranger]

Build a bridge across the Mississippi River, and you could connect KY 80 (which does connect to VA 80) with MO 80. I have driven all of this multi-state route in both states; the easternmost miles in Virginia are an adventure and that route really ought to be a state secondary 600-series route instead of a state primary route.

If I'm not mistaken, MO 80 was originally connected to KY 80 via ferry, many many years ago. 

[Revive 755]

^^^

I wouldn't mind knowing how many miles those multiplexes are.

Connecting MO 140 from the present US 67-MO 367 intersection to IL 140 would have been roughly 6.7 miles - given a few shifts around Alton since replacement of the Clark Bridge, this distance may be off slightly.

MO 79 to former IL 79 (which still appears on Google Maps as a road name) would have been about 1.31 miles.