List of unsigned auxiliary Interstate Highways

From Wikipedia, the free encyclopedia

Some auxiliary Interstate Highways are not signed, typically because the routes are already known by another name, and marking them could confuse motorists. A small fraction of three-digit Interstates, especially very short ones (in terms of physical length), are not signed.

Interstate	Vicinity	Description
I-305	Sacramento, CA	Signed as US 50 and Business Loop I-80. It was part of I-80 until October 1983.
I-110	El Paso, TX	Signed as US 54, though it was once signed before US 54 was moved to the road.
I-910	New Orleans, LA	Signed as Business Route US 90.
I-315	Great Falls, MT	Signed as Business Loop I-15.
I-124	Chattanooga, TN	Signed as US 27.
I-444	Tulsa, OK	Signed as US 75.
I-345	Dallas, TX	Signed US 75 (northbound) I-45 (southbound).
I-478	New York City, NY	Signed as the Brooklyn-Battery Tunnel.
I-878	New York City, NY	Signed as SR 878.
I-480N	Cleveland, OH	Signed as a connection between I-480 and I-271/US 422.
I-580	Reno, NV	Signed as US 395.
I-194	Bismarck, ND	Signed as SH 810.
I-495	Falmouth, ME	Signed as a connection between I-95 and I-295. It was redesignated from part of I-95 on January 5, 2004 Also known as the Falmouth Spur of the Maine Turnpike, with mile markers starting with the prefix FS-.
I-595	Annapolis, MD	Signed as US 50 from the Washington, DC, area east to Annapolis, Maryland.
I-695	Washington, D.C.	Signed as a short connection from I-395 to I-295.
I-296	Grand Rapids, MI	Signed as US 131.

[edit] External links

• Kurumi - 3-digit Interstate Highways

edit Main Interstate Highways (multiples of 5 highlighted)
4	5	8	10	12	15	16	17	19	20	22	24	25	26	27	29	30
35	37	39	40	43	44	45	49	55	57	59	64	65	66	68	69
70	71	72	73	74	75	76 (W)		76 (E)		77	78	79	80	81	82
83	84 (W)		84 (E)		85	86 (W)		86 (E)		87	88 (W)		88 (E)		89	90
91	93	94	95	96	97	99	(238)		H-1		H-2		H-3
Unsigned			A-1		A-2		A-3		A-4		PRI-1		PRI-2		PRI-3
Lists		Primary			Main - Intrastate - Suffixed - Future - Gaps
		Auxiliary			Main - Future - Unsigned
		Other			Standards - Business - Bypassed