Ok so this has always been confusing to me...
I take it that 3di's have to start at an existing Interstate (notably their "parent" as I-140 does at I-40, heading west and slightly south to Brunswick County) but highway maps show it goin East as well. Since it can't be a full circle (Wilmington is on the coast, so it would circle over the Atlantic), can it ever be West, and East, of its parent interstate?
If Jacksonville ever had a chance for a 3di, an upgraded US 17 built to Interstate standards could carry, say, 140 north, correct? or no?
extending I-140 all the way to Jacksonville along US-17 would be quite the feat for a 3di. Alas, I-97 and I-99 numbers are taken... so I have no idea what number it would be, but it would be about three times as long at least as the next-longest 3di.
Quote from: jcarte29 on February 13, 2012, 07:35:35 PM
I take it that 3di's have to start at an existing Interstate (notably their "parent" as I-140 does at I-40, heading west and slightly south to Brunswick County) but highway maps show it goin East as well. Since it can't be a full circle (Wilmington is on the coast, so it would circle over the Atlantic), can it ever be West, and East, of its parent interstate?
See I-526 in South Carolina.
Quote from: agentsteel53 on February 13, 2012, 07:39:50 PM
extending I-140 all the way to Jacksonville along US-17 would be quite the feat for a 3di. Alas, I-97 and I-99 numbers are taken... so I have no idea what number it would be, but it would be about three times as long at least as the next-longest 3di.
J'ville is only 45-50 miles north of Wilmington!?!?
NE2, good point, I assume you are referring to Charleston, SC right?
Quote from: jcarte29 on February 13, 2012, 08:16:58 PM
J'ville is only 45-50 miles north of Wilmington!?!?
NE2, good point, I assume you are referring to Charleston, SC right?
Jacksonville is 433 miles from Wilmington.
Quote from: agentsteel53 on February 13, 2012, 09:01:13 PM
Quote from: jcarte29 on February 13, 2012, 08:16:58 PM
J'ville is only 45-50 miles north of Wilmington!?!?
NE2, good point, I assume you are referring to Charleston, SC right?
Jacksonville is 433 miles from Wilmington.
I think he means Jacksonville, North Carolina, home of Camp Lejeune, NOT Jacksonville, FL.....
Quote from: jcarte29 on February 13, 2012, 08:16:58 PM
NE2, good point, I assume you are referring to Charleston, SC right?
No. I'm referring to the other I-526 in Altoona, PA.
Quote from: NE2 on February 13, 2012, 10:16:54 PM
Quote from: jcarte29 on February 13, 2012, 08:16:58 PM
NE2, good point, I assume you are referring to Charleston, SC right?
No. I'm referring to the other I-526 in Altoona, PA.
Sarcasm much? LOL
There would be nothing stopping I-140 from extending in both directions from its parent. I-287 does that in NY-NJ, and isn't a full loop. (In fact, it's more of an x95 in function.) I-195 in NJ does the same thing, crossing I-95 at Exit 6.
I call this type of thing a "double-ended spur". Except in my mind I replace the last word with... something adult and alliterative.
Quote from: Steve on February 14, 2012, 12:47:03 AM
There would be nothing stopping I-140 from extending in both directions from its parent. I-287 does that in NY-NJ, and isn't a full loop. (In fact, it's more of an x95 in function.) I-195 in NJ does the same thing, crossing I-95 at Exit 6.
Thanks for clarifying.
Quote from: agentsteel53 on February 13, 2012, 09:01:13 PM
Quote from: jcarte29 on February 13, 2012, 08:16:58 PM
J'ville is only 45-50 miles north of Wilmington!?!?
NE2, good point, I assume you are referring to Charleston, SC right?
Jacksonville is 433 miles from Wilmington.
Jacksonville Florida is 433 miles from Wilmington NC... Jacksonville NC is in the 50 mile range
Currently, I 140 is signed west of I 40. There is an END sign in the I 40 interchange. East of I 40, the bypass is signed as US 17. NCDOT applied for the whole bypass to be I 140, but decided to only sign it west of I 40. Eventually I 140 will reach US 17 in both directions.