U.S. Route 287 in Colorado

U.S. Highway 287 (US 287) is the portion of a north-south highway in Colorado that travels from the Oklahoma state line just south of Campo to the Wyoming state line north of Fort Collins.

U.S. Highway 287 marker

U.S. Highway 287
US 287 highlighted in red
Route information
Auxiliary route of US 87
Maintained by CDOT
Length385.22 mi[1] (619.95 km)
Major junctions
South end US-287 / US-385 at the Oklahoma state line
North end US 287 at the Wyoming state line
CountiesBaca, Prowers, Kiowa, Cheyenne, Lincoln, Elbert, Arapahoe, Denver, Adams, Broomfield, Boulder, Larimer
Highway system
Colorado State Highways
US 285SH 291

Route descriptionEdit

View south along U.S. Highway 287 in Larimer County, Colorado

Heading from the Oklahoma border, US 287 and US 385, upon entering the state, pass through Campo, and make an interchange with US 160 south of Springfield. In Lamar and Carlton, the highways split at an interchange with US 50, where US 287 continues north, this time concurrent with US 50. Just outside the town the highways make a sharp turn toward the west, and the road heading north is SH 196. South of Wiley, US 50 heads west, while US 287 turns north toward Wiley. East of Eads, Colorado US 287 turns toward the west again, briefly merging with SH 96. In Eads SH 96 continues west, while US 287 moves north. Just east of Kit Carson, US 287 again turns toward the west and merges with US 40. East of Limon, the two highways make two interchanges with I-70 before entering Limon. After a brief concurrency with US 24, the two highways merge with I-70. Near the outskirts of Aurora US 36 merges with the group of highways as well.

View south along U.S. Highway 287 entering Kiowa County

Just past E-470, I-70 and US 36 split to follow a more northerly course, while US 287 and US 40 continue west into Downtown Denver on Colfax Avenue. The I-25, US 6, US 87, and US 85 interchange marks US 287's second junction with its parent route, US 87. Shortly thereafter, at a cloverleaf interchange with Federal Boulevard, SH 88 runs south, US 40 continues west, and US 287 turns north on Federal Boulevard. After crossing I-76 and then US 36 for a second time, US 287 turns west onto 120th Avenue where it overlaps SH 128. Just before meeting US 36 again in Broomfield, US 287 bends back to the north, leaving CO 128 to continues west. At Baseline Road in Lafayette, SH 7 joins US 287 for about a mile, before it splits to the west on Arapahoe Avenue towards Boulder. US 287 intersects SH 119 as it enters Longmont on the very busy Main Street, then intersects SH 66 at the north edge of town. The road bypasses Berthoud en route to Loveland, where US 287 splits into the pair of one-way streets. US 287 passes through Fort Collins on College Avenue, merging with SH 14 at Jefferson Street. On the edge of the mountains, SH 14 splits and heads west into Poudre Canyon, while US 287 continues north into Wyoming. The section of US 287 between Fort Collins, Colorado and Laramie, Wyoming carries very heavy truck traffic and was once considered dangerous.[2]


The original US 287 only traveled from Denver past the Wyoming state line in 1935. In 1940, US 287 was expanded past the Oklahoma state line (to Port Arthur, Texas), replacing US 285.

After a head-on crash on the highway in 2001, there were people lobbying for a widening of US 287 at the Wyoming state line. Their request was answered in April 2009.[2] Throughout 2012, the highway was expanded to three lanes north of Fort Collins, was resurfaced, and contained shoulders to prevent such accidents.[1]

Junction listEdit

Baca0.0000.000    US-287 / US-385 south / SH-3 east – Boise CityContinuation into Oklahoma
Springfield28.77746.312  US 160 – Trinidad, Johnson City
Prowers40.77265.616  SH 116 – Two Buttes, Lycan
Lamar77.639124.948   US 50 east / US 385 north (Olive Street) – GranadaNorthern end of US 385 overlap; southern end of US 50 overlap
  US 50 west – La JuntaInterchange; northern end of US 50 overlap
Wiley87.371140.610  SH 196 – Kornman, McClave
Kiowa110.590177.977  SH 96 east – Sheridan LakeSouthern end of SH 96 overlap
Eads113.420182.532  SH 96 west – HaswellNorthern end of SH 96 overlap
Cheyenne133.240214.429  US 40 east – Cheyenne WellsSouthern end of US 40 overlap
Kit Carson134.149215.892  SH 59 – Seibert
Aroya153.819247.548  SH 94 – Colorado Springs
Lincoln193.281311.056    I-70 Bus. begin / US 24 east / I-70Southern end of I-70 Bus./US 24 overlap; I-70 exit 363
Limon194.552313.101  I-70 – Weigh StationI-70 exit 361; eastbound exit signed to   SH 71 north
194.950313.742  SH 71 north (1st Street) – BrushSouthern end of SH 71 overlap
196.007315.443  SH 71 south (Indiana Avenue) – OrdwayNorthern end of SH 71 overlap
197.031317.091  US 24 west – Colorado SpringsNorthern end of US 24 overlap
197.579317.973   I-70 Bus. end / I-70 east – Weigh StationNorthern end of I-70 Bus. overlap; southern end of I-70 overlap; I-70 exit 359
See I-70
county line
Aurora266.715429.236    I-70 Bus. begin / I-70 (US 36) – DenverNorthern end of I-70 overlap; southern end of I-70 Bus./US 40 overlap; no southbound access to I-70 west; I-70 exit 288; serves Denver International Airport
Arapahoe272.516438.572  I-225I-225 exit 10
City and County of Denver278.232447.771  SH 2 (Colorado Boulevard)
282.065453.940  I-25 (US 6 / US 85 / US 87) / Auraria Parkway – Ft. Collins, Colorado SpringsI-25 exit 210A
282.700454.962  SH 88 south (Federal Boulevard south)Interchange
   I-70 Bus. / US 40 west (Colfax Avenue west)Interchange; northern end of I-70 Bus./US 40 overlap
285.752459.873  I-70 – Grand JunctionI-70 exit 272
AdamsBerkley286.913461.742  I-76 – Fort MorganI-76 exit 3
Westminster289.367465.691  US 36 (Denver-Boulder Turnpike) – Boulder, DenverInterchange
294.711474.291  SH 128 east (120th Avenue east)Southern end of SH 128 overlap
City and County of Broomfield298.100479.745   SH 121 south / SH 128 westInterchange; northern end of SH 128 overlap
county line
BroomfieldLafayette line300.886484.229Northwest ParkwayNorthwest Pkwy. exit 52
BoulderLafayette301.825485.740  SH 42 west (Empire Road) – Louisville
304.273489.680  SH 7 east (Baseline Road) – BrightonSouthern end of SH 7 overlap
305.361491.431  SH 7 west (Arapahoe Road) – BoulderNorthern end of SH 7 overlap
310.390499.524  SH 52 – Niwot, Dacono, Fort Lupton
Longmont314.902506.786   SH 119 (Ken Pratt Boulevard) to I-25 – Boulder
318.326512.296  SH 66 – Estes Park, Platteville, Ute Creek Golf Course
LarimerBerthoud325.529523.888  SH 56 east – Museum, Berthoud Business District
Campion329.160529.7321st Street in BerthoudInterchange; southbound exit and northbound entrance
330.023531.121  SH 60 east (SE 42nd Street)
Loveland332.028534.347  SH 402 east (14th Street SE)
334.053537.606   US 34 (Eisenhower Boulevard) – Estes Park, GreeleyServes McKee Medical Center
Fort Collins339.128545.774   SH 392 east (Carpenter Road) to I-25
346.874558.240   SH 14 east (Jefferson Street) to I-25 – Ault, DenverSouthern end of SH 14 overlap
348.635561.074  SH 1 north (Terry Lake Road)
355.856572.695  SH 14 west (Cache La Poudre-North Park Scenic Byway) – Walden, Poudre CanyonNorthern end of SH 14 overlap
385.223619.956  US 287 north – LaramieContinuation into Wyoming
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b "Colorado US 287". Retrieved February 12, 2016.[self-published source]
  2. ^ a b "Wyo begins widening 287". Casper Star-Tribune. Associated Press. April 19, 2009. Retrieved August 22, 2016.
  3. ^ "Highway Data Explorer". OTIS: Online Transportation Information System. Colorado Department of Transportation. Archived from the original on September 10, 2012. Retrieved September 6, 2017.

External linksEdit

KML is from Wikidata
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