[Talk-us] East end of I-44 (Re: shields and overlaps)

[Lord-Castillo, Brett]

> > This shot shows the road as all 4 interstates and US-40 at once.
> > http://maps.google.com/?ie=UTF8&ll=38.617642,-90.181049&spn=0.00824,0.013078&z=17&layer=c&cbll=38.617746,-90.181461&panoid=etjY4kn9oqoecsdYSjoXqw&cbp=12,285.92,,0,5.98
> > (This shot is actually from during the realignment, as shown by the I-64 detour sign.)
> > As soon as you hit the end of the bridge, the 4 Interstates start splitting up.
>
> Is there any reassurance signage for I-44 in either direction here? This 
> is close enough to the I-44/55 junction that the exit 40C overhead could 
> easily be implying that it's 'TO' I-44, like exit 1C on I-255 westbound 
> is signed US 50/61/67 despite not leading directly to the latter two.
>
> The mileposts display I-55 rather than I-44; is it MoDOT policy to 
> always use the lowest number (if both are the same network)?

MoDOT only puts one symbol on a mile marker. Notice that the bridge actually leads most directly to I-64/US-40; all the other interstates exit, but the mile marker and reassurance signage only say I-55. I am not sure how the choice is made which Interstate to use for the reassurance signs and mile markers.
The MoDOT roads on file at MSDIS say that the bridge is all four interstates.
Either as a 3 Interstate + 1 highway shield or 4 Interstate + 1 highway shield, it still makes an interesting rendering problem. 

Brett Lord-Castillo
Information Systems Designer/GIS Programmer
St. Louis County Police
Office of Emergency Management
14847 Ladue Bluffs Crossing Drive
Chesterfield, MO 63017
Office: 314-628-5400
Fax: 314-628-5508
Direct: 314-628-5407