Signage at Split Interchange

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larry_scholnick - 17 Jul 2009 21:06 GMT

I recently spent a weekend in the vicinity of Sacramento, CA. While
driving east (northeast) on I-80 I noticed an unusual sign. But first
let me lay out the situation.

There are two intersections of I-80 and CA-113 located 4 miles apart.
At Exit 66, CA-113 goes south as a city street through Dixon, CA and
then as a country road. At Exit 70, CA-113 goes north as a ful
freeway, subsequently connecting with I-5. The intervening 4 miles
are a multiplex of I-80 with CA-113.

Caltrans correctly realized that the vast majority of I-80 traffic
seeking CA-113 is seeking CA-113 North, not CA-113 South. They wanted
to avoid having those drivers exit at CA-113 South and wander around
the streets of Dixon.

So they posted a sign on EB I-80 saying something like:
CA-113 South Next Exit - CA-113 Fwy North 4 Miles Ahead

Problem solved! Of course this points out the zillions of other
places where analogous signs would be equally useful. Let's skip
trying to list all such places.

Does someone have the exact wording of this sign (or a picture)? Are
there similar signs that successfully communicate this message in
other places?

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Gary V - 18 Jul 2009 02:35 GMT

M-55 duplexes with I-75 for 12 miles in mid-northern Michigan. There
are signs, but I don't recall the exact wording. It's something to
the effect of

M-55 East Exit 215
M-55 West Exit 227 12 Miles

There may also be the control city of Cadillac for westbound.

There is a similar set of signs in northern metro Detroit at M-24
(Exit 81) and US-24 (Exit 93) from I-75.

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Larry Sheldon - 18 Jul 2009 04:36 GMT

> M-55 duplexes with I-75 for 12 miles in mid-northern Michigan. There
> are signs, but I don't recall the exact wording. It's something to
[quoted text clipped - 7 lines]
> There is a similar set of signs in northern metro Detroit at M-24
> (Exit 81) and US-24 (Exit 93) from I-75.

I 74, I 80, and I 280 do a weird thing in the quad cities--I don't
remember the signs exactly except the exit signs from I 80 to I 74 all
say "Local Traffic Only" or some such.

Seems like there are other signs advising "Thru I 74 traffic" ti use I80
(which crosses it again going east) or I 280 (which multiples with it
south and east of Moline).

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richard - 18 Jul 2009 07:36 GMT

>I recently spent a weekend in the vicinity of Sacramento, CA. While
>driving east (northeast) on I-80 I noticed an unusual sign. But first
[quoted text clipped - 21 lines]
>there similar signs that successfully communicate this message in
>other places?

Can't recall exactly where, but I have seen many similar signs.
Which do help because I may wind up taking the wrong exit.

One confusing place that could use clairification is in Wisconsin on
US 2 at hiway 13.
Coming from Duluth heading east, you find an exit marked simply as 13
south.
Yet, if you take it, intending to head south to Marshfield, then you
will be taken on a needless scenic ride beisde the lake. Unless you
have looked at a map you would not know this and be confused.
I made that mistake once while a driving a truck. Nice ride, but not
for a trucker.

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Cameron Kaiser - 19 Jul 2009 05:30 GMT

>>So they posted a sign on EB I-80 saying something like:
>>CA-113 South Next Exit - CA-113 Fwy North 4 Miles Ahead

>Can't recall exactly where, but I have seen many similar signs.
>Which do help because I may wind up taking the wrong exit.

Caltrans has similar signs on I-15 at CA 79 (split and carried by I-15),
and I-215 at CA 74. I'm sure there are others.

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personal page: http://www.cameronkaiser.com/
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SP Cook - 19 Jul 2009 14:45 GMT

> Does someone have the exact wording of this sign (or a picture)? Are
> there similar signs that successfully communicate this message in
> other places?

Three similar situations, but a different way of signing.

West Virginia:

US 19 parallels, more or less, I-79 as an unimportant local road
through Pennsylvania and West Virginia to WV Exit 67, where it becomes
Corridor L, and continues south, being the main route for through
southbound traffic, and 79 turns more west than south. Knowing that
motorists are looking for US 19, the US 19 shields have been removed
from all exits southbound south of Clarksburg. So a sign reads "US 19
- Stonewall Jackson Lake" if one is going north but just "Stonewall
Jackson Lake" if going south. After Corridor L ends at I-77's Exit
48, US 19 resumes its role as an bypassed country road. Similarly
Exit 20 northbound on I-77 reads simply "Camp Creek" while it reads
"US 19 - Camp Creek" southbound.

Maryland:

Corridor E was supposed to carry the numbers US 40 and US 48. But
after completion, it was redesignated as I-68. If one is heading west
on I-70, 68 continues west from I-70, while 70 heads north for about
20 miles into Pennsylvania and then turns west again. This conflicted
with MD 68 which is an exit off of 70 12 miles before this junction.
Thus the sign, westbound, for the MD 68 exit read "This is (MD 68
shield) - Clear Springs - (I-68 shield) National Freeway, stay on
(I-70 shield) 12 miles".

Virginia/North Carolina:

US 52 more or less parallels I-77 as a minor bypassed local road. At
the top of Fancy Gap mountain, US 52 is a very dangerous mountian
decent straight into Mt. Airy, NC, where US 52 is an important route,
actually a little shorter than I-77 to the so-called I-74 to Mt.
Airy. At Fancy Gap southbound a white sign points out the danger of
US 52 and directs traffic to use I-77. At Mt. Airy northbound a BGS
directs northbound traffic to the left exit for "I-74" for Wytheville,
VA and labels US 52 as taking one only to "downtown" Mt. Airy.

SP Cook

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