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List of Interstate Highways in Colorado

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This is an old revision of this page, as edited by DB1729 (talk | contribs) at 11:53, 15 December 2020 (removed Category:Colorado transportation-related lists; added Category:Lists of roads in Colorado using HotCat). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Interstate Highways in Colorado
Interstate 70 marker
Interstate 225 marker
Interstate 76 Business marker
Standard highway markers for Interstate 70, Interstate 225, and Interstate 76 Business
Highway names
InterstatesInterstate X (I-X)
Business routes:Interstate X Business (I-X Bus.)
System links
  • Colorado State Highway System

Mainline highways

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-25 305.04 490.91 I-25 at the New Mexico state line I-25 at the Wyoming state line 01958-01-011958 current
I-70 449.51 723.42 I-70 at the Utah state line I-70 at the Kansas state line 01956-01-011956 current
I-76 183.99 296.10 I-70 in Arvada I-76 at the Nebraska state line 01976-01-011976 current
I-80S 178.22 286.82 I-25/US 87 in North Washington I-80S at the Nebraska state line 01958-01-011958 01976-01-011976 Renumbered as I-76 to conform to AASHTO policy against suffixed routes
I-225 11.99 19.30 I-25 in Denver I-70 in Aurora and Denver 01976-01-011976 current
I-270 5.35 8.61 I-25/US 36 in unincorporated Adams County I-70 in Denver 01965-01-011965 current
I-425 5.35 8.61 I-25/US 36 in unincorporated Adams County I-70 in Denver — 01959-01-011959 Original designation for I-270
I-470 — — Beltway around Denver 01968-01-011968 — Proposed, but cancelled due to environmental concerns
  •       Former

Business routes

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-25 BL 0.5 0.80 Trinidad — 02009-01-012009 A 2009 reconstruction project along I-25 rebuilt the northern terminus and eliminated the original exit which removed the route.[1]
I-25 BS 1.94 3.12 Aguilar — —
I-25 BL 3.94 6.34 Walsenburg — —
I-25 BL 6.75 10.86 Colorado Springs — 02007-01-012007
I-25 BL 1.2 1.9 Castle Rock — 01996-01-011996 Likely unsigned[2]
I-70 BL 13.36 21.50 Grand Junction Clifton — —
I-70 BL 3.7 6.0 Palisade — —
I-70 BL 4.0 6.4 Rifle — 02004-01-012004
I-70 BL 0.17 0.27 Silt — — Unsigned
I-70 BL 0.27 0.43 Eagle — — Unsigned
I-70 BL 0.52 0.84 Edwards — — Unsigned
I-70 BL 0.43 0.69 Avon — 01999-01-011999
I-70 BL 2.3 3.7 Frisco — —
I-70 BL 2.54 4.09 Idaho Springs — —
I-70 BL 26.80 43.13 West Pleasant View Aurora — — Also serves Lakewood and Denver
I-70 BL 0.31 0.50 Watkins — — Only signed along I-70[3]
I-70 BL 0.30 0.48 Strasburg — — Unsigned
I-70 BL 0.31 0.50 Deer Trail — — Unsigned
I-70 BL 0.30 0.48 Agate — — Unsigned
I-70 BL 2.80 4.51 Limon — —
I-70 BL 0.51 0.82 Vona — — Unsigned
I-70 BL 1.80 2.90 Burlington — — Only signed along I-70
I-76 BL 0.30 0.48 Keenesburg — — Unsigned
I-76 BL 52.31 84.18 Fort Morgan Sterling — — Also serves Brush, Hillrose, Merino, and Atwood
  •       Former

See also

References

  1. ^ https://www.interstate-guide.com/business/ir-025/
  2. ^ https://www.interstate-guide.com/business/ir-025/
  3. ^ https://www.interstate-guide.com/business/ir-070/
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