U.S. Route 6 in Colorado

U.S. Route 6 (US 6) is a part of the U.S. Highway System that travels from Bishop, California, to Provincetown, Massachusetts. In the U.S. state of Colorado, US 6 is an east–west highway stretching from Utah to Nebraska. Much of the route overlaps other highways in Colorado, and as a result, much of US 6 is unsigned.

This article is about the section of U.S. Route 6 in Colorado. For the entire route, see U.S. Route 6.

U.S. Highway 6
US 6 highlighted in red
Route information
Maintained by CDOT
Length467.284 mi[1] (752.021 km)
Major junctions
West end I-70 / US-6 / US-50 at Utah state line
  US 50 in Grand Junction

US 24 in Minturn
US 40 near Empire
SH 470 near Golden
I-25 / US 85 / US 87 / US 287 in Denver
I-270 in Commerce City
I-76 from Commerce City to Fort Morgan
US 34 in Fort Morgan

US 385 in Holyoke
East end US 6 at Nebraska state line
Location
CountiesMesa, Garfield, Eagle, Summit, Clear Creek, Jefferson, Denver, Adams, Weld, Morgan, Washington, Logan, Phillips
Highway system
Colorado State Highways
← SH 5→ SH 7

Route description
The 6th Avenue Freeway in Denver, Colorado, looking east from Knox Court.

US 6 is concurrent with Interstate 70 for a significant portion of its length from the Utah state line to Denver. When the highway enters the western Denver suburbs, US 6 coincidentally aligns with 6th Avenue in the grid system, where it is known as 6th Avenue Freeway. Once it reaches Interstate 25, US 6 travels north briefly, then follows Interstate 76 for most of its length east of Denver. It is unsigned while it is overlapped.

Loveland Pass in 1964

The highest altitude along US 6 is 11,990 feet (3,650 m) at Loveland Pass, where it crosses the Continental Divide. It continues down Clear Creek Valley until it reaches I-70, where it is briefly overlapped until I-70 leaves Clear Creek Valley. US 6 continues down Clear Creek and into Denver, where it turns into a freeway with 6 lanes. East of Denver, it continues east while joined with I-76 until it reaches Sterling, where it diverges from the interstate. The last town in Colorado it passes is Holyoke.

U.S. 6 in Lakewood Colorado


Major intersections
CountyLocationmi[1]kmExitDestinationsNotes
Mesa​0.0000.000 I-70 / US-6 / US-50 west – SalinaContinuation into Utah
​2.1943.5312Rabbit Valley Road
Mack11.10617.87311 I-70 east – Grand JunctionEastern end of I-70 overlap
Loma15.13224.353 SH 139 to I-70 – Loma, RangelyTo I-70 via SH 139 south
Fruita19.95532.114 SH 340 east (S. Coulson Street) to I-70Western terminus of SH 340
Grand Junction26.08041.972 I-70 / I-70 BL begins – DenverWestern end of I-70 Bus. overlap; I-70 exit 26; Diverging diamond interchange
28.24445.45424 Road north, Redlands Parkway southInterchange
30.44749.000 I-70 BL east / US 50 east – MontroseEastern end of I-70 Bus. and US 50 overlaps
34.85956.100 I-70 BL westWestern end of I-70 Bus. overlap
Clifton37.26759.975 SH 141 southNorthern terminus of SH 141
37.72660.714 I-70 BL eastEastern end of I-70 Bus. overlap
​46.51074.85144 I-70 west – Grand JunctionWestern end of I-70 overlap; eastbound exit and westbound entrance only
​47.93377.14146Cameo
​49.46879.61147James M. Robb – Colorado River State Park, Island AcresFormer port of entry
​51.61683.06849 SH 65 south to SH 330 east – Grand Mesa, CollbranNorthern terminus of SH 65
​64.249103.39962De Beque
GarfieldParachute77.262124.34175Parachute, Battlement Mesa
​83.837134.92381Rulison
​89.451143.95787 I-70 east – DenverEastern end of I-70 overlap
Rifle91.796147.731 SH 13 north – Rifle, MeekerSouthern terminus of SH 13
​110.603177.998109 I-70 west – Grand JunctionWestern end of I-70 overlap
​113.931183.354111South Canyon Creek Road
Glenwood Springs116.898188.129114West Glenwood
118.983191.485116 SH 82 – Glenwood Springs, AspenWestern terminus of SH 82
​121.241195.118119No Name
​123.743199.145121Grizzly Creek – Hanging Lake
​125.263201.591123Shoshone Access RoadEastbound exit and westbound entrance only
​127.664205.455125Hanging LakeEastbound exit and westbound entrance only
​127.870–
128.457		205.787–
206.732		Hanging Lake Tunnel
​130.918210.692129Bair Ranch Road
Eagle​135.985218.847133Dotsero
Gypsum142.134228.743140 I-70 east – DenverEastern end of I-70 overlap
​159.500256.690 SH 131 north – WolcottWestern end of SH 131 overlap
​159.889257.316 SH 131 south to I-70Eastern end of SH 131 overlap
​174.857281.405171 I-70 west / US 24 east – Minturn, LeadvilleWestern end of I-70 overlap
Vail177.071284.968173West Vail
179.809289.375176Vail Ski Area – Vail Museum
183.618295.505180East Vail
Eagle–Summit
county line		​193.733311.783Vail Pass summit — elevation 10,662 feet (3,250 m)
Summit​193.847311.967190Shrine Pass Road – Vail Pass rest area
​199.050320.340195 SH 91 south – Copper Mountain, LeadvilleNorthern terminus of SH 91
​201.606324.453198Officers Gulch
Frisco204.747329.508201Main Street
206.104331.692203 SH 9 south – Frisco, BreckenridgeWestern end of SH 9 overlap
Silverthorne209.175336.635205 I-70 east / SH 9 north – Dillon, SilverthorneEastern end of I-70 and SH 9 overlaps
Summit–Clear Creek
county line		​225.552362.991Loveland Pass summit — elevation 11,990 feet (3,650 m)
Clear Creek​229.325369.063 I-70 west – Grand JunctionWestern end of I-70 overlap
​218.346351.394218Herman Gulch Road
​221.297356.143221Bakerville
Silver Plume225.719363.260226Silver Plume
Georgetown227.910366.786228Georgetown
​231.889373.189232 US 40 west – Empire, GranbyWestern end of US 40 overlap
​223.047358.959223LawsonEastbound exit only
​234.209376.923234Downieville, Lawson
​235.005378.204235DumontWestbound exit and eastbound entrance only
​237.680382.509238Fall River Road
Idaho Springs238.885384.448239 I-70 BL east – Idaho Springs
239.652385.683240 SH 103 south – Mount EvansNorthern terminus of SH 103
241.125388.053241 I-70 BL west / County Road 314
​242.980391.038243Hidden Valley, Central City
​251.001403.947244 I-70 east / US 40 east – DenverEastern end of I-70 / US 40 overlap
​257.296414.078 SH 119 north – Black Hawk, Central CitySouthern terminus of SH 119
JeffersonGolden271.600437.098 SH 58 east / SH 93 north – Golden, BoulderWestern terminus of SH 58
273.397439.990 SH 470 east – Colorado SpringsCO 470 exits 0A-B northbound.
275.120442.763 US 40 (Colfax Avenue)
275.656443.625 SH 470 – Colorado SpringsWestern end of 6th Avenue freeway
276.003444.184 I-70 – Grand Junction, DenverI-70 exit 261 eastbound.
Lakewood276.998445.785Indiana Street
277.002445.792Union Boulevard, Simms Street
277.310446.287 SH 391 (Kipling Street)
278.795448.677Garrison Street
280.830451.952 SH 121 (Wadsworth Blvd)
281.984453.809 SH 95 (Sheridan Blvd)
282.330454.366Knox Court
City and County of Denver283.86456.83 SH 88 (Federal Blvd)
284.470457.810 I-25 – Colorado SpringsEastern end of 6th Avenue freeway/South end of I-25 overlap, I-25 exits 209A-B
286.272460.710209C8th Avenue
287.310462.381210A US 40 (Colfax Avenue, I-70 Bus./US 287) – Downtown Denver
287.661462.946210CAuraria ParkwayNorthbound exit and southbound entrance
288.008463.504210B17th AvenueSouthbound exit (to 20th Avenue) is via exit 211
289.167465.36921123rd Avenue
289.985466.686212Speer Boulevard – Downtown DenverSigned as exits 212A (south) and 212B (north)
290.425467.394212C20th Street
291.479469.090213Park Avenue, West 38th Avenue
290.090466.855214A I-25 north / I-70 west – Fort Collins, Grand JunctionNorth end of I-25 overlap/Western end of I-70 overlap
292.815471.240275AWashington StreetEastbound signed exit 274
293.226471.902275B SH 265 north (Brighton Boulevard)Southern terminus of SH 265
292.661470.992275CYork Street / Josephine StreetEastbound exit and westbound entrance
293.194471.850276A I-70 east / US 85 northEastern end of I-70 overlap (final)
SH 2 south (Colorado Blvd)West end of SH 2 concurrency
AdamsCommerce City294473 I-270 – Boulder, LimonI-270 exits 2A-B.
294.550474.032 SH 2 eastEastbound exit and westbound entrance; east end of SH 2 concurrency
295.995476.358 I-76 west – ArvadaWestern end of I-76 overlap, exit 9 westbound.
​296.466477.1161088th Avenue
​297.114478.1591196th Avenue
​298.345480.14012 US 85 north – Greeley, BrightonEastern end of US 85 overlap; no eastbound entrance
Commerce City302.285486.48116 SH 2 (Sable Boulevard) / 120th Avenue – Denver International Airport
304.661490.30418 E-470 south – Limon, Denver International AirportWestbound exit and eastbound entrance
Brighton305.219491.20220136th Avenue
307.828495.40121144th Avenue
308.626496.68522Bromley Lane
310.994500.49625 SH 7 west – Lochbuie, BrightonEastern terminus of SH 7
WeldHudson316.269508.98631 SH 52 – Hudson, Fort Lupton
319.220513.73534Kersey Road
​324.160521.68539Keenesburg (I-76 Bus. south)
​333.302536.39848Roggen
​334.007537.53249Painter RoadWestbound exit and eastbound entrance
​342.652551.44557County Road 91
​345.225555.58660 SH 144 east – OrchardWestern terminus of SH 144
Morgan​348.226560.41564WigginsEastbound exit and westbound entrance
​350.314563.77666A SH 39 / SH 52 – Goodrich, Wiggins
​350.535564.13166B US 34 west – Greeley, Estes ParkWestern end of US 34 overlap; westbound exit and eastbound entrance
​357.219574.88873Long Bridge Road
​359.789579.02475 US 34 east / I-76 BL east – Fort MorganEastern end of US 34 overlap
​364.054585.88879 SH 144 – Weldona
Fort Morgan365.243587.80280 SH 52 – Raymer, Fort Morgan
366.993590.61882Barlow Road – Fort Morgan
​370.076595.58086Dodd Bridge Road
​373.368600.87889Hospital Road
​375.042603.57290 SH 71 to US 34 – Brush, Akron, Limon, SnyderSigned as exits 90A (south) and 90B (north)
​379.192610.250 I-76 east – SterlingEastern end of I-76 overlap, exit 92.
Washington
 No major junctions
LoganAtwood405.187652.085 SH 63 south – AkronNorthern terminus of SH 63
Sterling412.061663.148 SH 14 west – Fort CollinsEastern terminus of SH 14
412.689664.159 US 138 east – JulesburgWestern terminus of SH 138
414.116666.455 I-76 – Fort Morgan, JulesburgI-76 exit 125.
​414.317666.779 SH 61 south – OtisNorthern terminus of SH 61
Fleming431.121693.822 SH 55 northSouthern terminus of SH 55
PhillipsHaxtun444.295715.023 SH 59 – Yuma, Sedgwick
Holyoke457.213735.813 US 385 – Wray, Julesburg
​467.284752.021 US 6 east – ImperialNebraska state line; eastern terminus of US 6 in Colorado
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

KML is from Wikidata
  1. Colorado Department of Transportation, Highway Data Archived October 8, 2007, at the Wayback Machine, accessed July 2007

Colorado Highways: US 6

U.S. Route 6
Previous state:
Utah		 Colorado Next state:
Nebraska
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