Colorado Highways: Routes 334 to 366

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< 300 to 333

340 US340 347 348 US350

367 to 399 >

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Location: Eastern Mountains
Alignment: Spur southwest from SH 73 south of Evergreen to Brook Forest


Location: Western Mountains
Alignment: Spur south from SH 82 at Snowmass


Location: Eastern Mountains
Alignment: Gold Camp Road from Colorado Springs to Cripple Creek

SH 336 became a state highway in 1947, and was the number for Gold Camp Road from US 24 up to Cripple Creek. By 1954 the western portion of it had been turned back and it only went from US 24 up 20mi. Gone by 1955.


Location: Western Mountains
Alignment: Spur southwest from SH 335 south of SH 82


Location: Western Mountains
Alignment: Spur east from SH 82 at Woody Creek


Location: Central Western Slope
Alignment: Spur south from SH 330 at Collbran


Location: Central Western Slope
Length*: 13.34mi
NW End: Jct US 6 at Coulson St in Fruita
SE End: Jct BL I-70/US 50 at Grand Ave./1st St. in Grand Junction

Counties: Mesa
Places: Fruita, The Redlands, Grand Junction

Expressway: From west of the Colorado River over it east into Grand Junction.

Milepost Guide:

  • 0.00: US 6, Fruita (begin SH 340 in Mesa County)
  • 0.50: I-70 Exit 19 south of Fruita
  • 13.34: BL I-70/US 50, Grand Junction (end SH 340)

Annual Average Daily Traffic (2008):

  • 3800 at US 6, Fruita
  • 11,800 south of I-70
  • 2600 east Colorado National Monument entrance
  • 11,400 east of Colonial Dr./CR E.90
  • 20,500 at BL 70/US 50, Grand Junction

The northwest end of SH 340 has a bit of a backtracking beginning. From the I-70 Exit 19 interchange, SH 340 heads north onto Cherry St in Fruita, but a bridge immediately takes it over US 6 and a UPRR mainline railroad. In order to connect to US 6, at the foot of the bridge SH 340 turns left at Aspen Ave, goes west one block to Coulson St, and south one block to US 6.

The I-70 and SH 340 interchange features roundabouts at the southside ramps and south frontage road. The southeast corner of the interchange is also home to a Colorado Welcome Center rest area and Western Slope Vietnam Veterans Memorial. From there SH 340 heads south out of Fruita and across the Colorado River. It then turns southeast, going up the Colorado valley toward Grand Junction. Along the way it parallels the northeast boundary of Colorado National Monument.  SH 340 then passes through the suburban development The Redlands on Broadway. Just west of downtown Grand Junction, SH 340 then turns east, goes over the Colorado again, then hits BL I-70/US 50 in central Grand Junction.

Photo Gallery:

  • I-70 Roundabout Signs. Overhead signs as one is heading south (east on SH 340) through the I-70 interchange. (September 2011)
  • SH 340/US 50/BL I-70. A sign assembly at SH 340's east end. Note how the "WEST" and up arrow is in the wrong place with respect to the shield. Photo by Robert Halonen.

SH 340 became a state highway in 1939. The current section has remained pretty much unchanged, but originally there also was an east leg that went from US 50 just south of Grand Junction east, then stair stepped northeast to US 6 at Palisade. SH 340 was paved entirely by 1955. By 1970 the section east of Grand Junction reach only as far east of SH 146 (current SH 141). SH 340 had its east end trimmed back to Grand Junction by 1972.


US 340 is a US Highway proposed in 1926 that did not "make the cut". US 340 was the first number proposed for the route from Limon east via Kit Carson and Cheyenne Wells to Kansas. US 40S ended up getting its place when the system was implemented in 1927.


Location: Western Mountains
Alignment: Spur both north and south from US 50 at Gunnison. The north section went from SH 135 just north of Gunnison north to Baldwin.


Location: Central Western Slope

When SH 342 first became a state highway in 1939, it went from Grand Junction and followed the south side of the railway northwest to Fruita. By 1949 US 6-50 had been rerouted on a more direct route from Grand Junction to Fruita, and SH 342 was turned back. But then on the 1950 maps there's an SH 342 shown, as a loop through Colorado National Monument.


Location: Western Slope
Alignment: Spur northeast from US 550 at Ridgway


Location: Northwest Metro Denver

When it became a state highway in 1939, SH 344 went from SH 222 (probably the intersection of Indiana and 64th) south and east via 58th to Wadsworth (SH 121). By 1946 it had been extended a little further to the east to SH 72 (maybe Harlan or Lamar). Gone by 1947.


Location: Western Slope
Link from SH 65 at Cedaredge southeast to SH 92 at Lazear. Also spurred west from SH 65 and south from SH 92.


Location: Eastern Western Slope
Alignment: Link from SH 92 southeast of Hotchkiss northeast to SH 187 southwest of Paonia


Location: Western Slope
Length*: 5.25mi
S End: Jct US 50 east of Montrose
N End: South border of Black Canyon of the Gunnison National Park

Counties: Montrose

Annual Average Daily Traffic (2008):

  • 870 at US 50
  • 600 at BCGNP

SH 347 doesn't do much else other than serve as an access road to the south rim of BCGNP. From US 50, it's one continuous curvy, uphill grade to BCGNP. The north rim is gotten to from SH 92.  

SH 347 was brought into the state system in 1939. Paved by 1960. Black Canyon of the Gunnison was changed from a national monument to a national park in late October 1999.


Location: Western Slope
Length*: 17.06mi
NW End: Jct US 50 at Eaton Ave., 7th St., and Main St. in Delta
SE End: Jct US 50 on the east side Olathe

Counties: Delta, Montrose
Places: Delta, Pea Green Corner, Olathe

Milepost Guide:

  • 0.00: US 50, Delta (begin SH 348 in Delta County)
  • 6.01: Enter Montrose County
  • 16.83: BR US 50, Olathe
  • 17.06: US 50 east of Olathe (end SH 348)

Annual Average Daily Traffic (2008):

  • 2300 at US 50, Delta
  • 740 south of CR D
  • 340 south of Banner Rd., Pea Green Corner
  • 680 south of Dalia Rd.
  • 1100 east of CR 55
  • 4000 at US 50, Olathe

From US 50 in central Delta, SH 348 heads southwest on Eaton Ave., west on 8th St., and then south out of town. On its way south to Pea Green Corner, it has one jog to the west, then it turns due east. Going east toward Olathe, it has one jog to the south. SH 348 then goes through town on 5th St., ending at the US 50 bypass on the east side of town.

SH 348 became state highway in 1939. Originally it went from SH 65 south of Delta east through Olathe, then looped east, north, and west, back to US 50. By 1954, it had been rerouted so it had the routing it does now. Paved by 1963. See also SH 349 below.


Location: Western Slope
Alignment: Went from US 50 southeast of Delta then south via current SH 348 to SH 65 southwest of Olathe


Location: Southern Western Slope
Alignment: Link from SH 141 west of Nucla, east via Nucla to SH 90


Location: Southern Front Range > Arkansas Valley
Length*: 72.71mi
SW End: Jct US 160 at Beshoar Junction
NE End: Jct US 50 in west La Junta
Nationally: This US highway is entirely within Colorado

Counties: Las Animas, Otero
Places: Beshoar Junction, Model, Timpas, La Junta

Scenic & Historic Byways: Santa Fe Trail America's Byways

Milepost Guide:

  • 0.00: US 160 (begin US 350 in Las Animas County)
  • 37.36: Enter Otero County
  • 59.41: SH 71 south of Hawley
  • 72.71: US 50, La Junta (end US 350)

Annual Average Daily Traffic (2008):

  • 1000 at US 160, Beshoar Junction
  • 830 northeast of CR 85
  • 430 northeast of CR 70
  • 350 southwest of SH 71
  • 210 northeast of SH 71
  • 560 northeast of CR Y
  • 1000 at US 50, La Junta

US 350 starts at US 160 northeast of Trinidad at Beshoar Junction, which is actually nothing more than a rail siding. US 160 coming northeast out of Trinidad is signed as "To 350". From US 160, US 350 heads northeast along a BNSF railline through the Tyrone Flats, past the Piņon Canyon Military Reservation and through a section of the Comanche National Grassland. Going northeast, US 350 goes through Model, Tyrone, Thatcher, Dehli and Timpas. Of those, there's nothing to Tyrone, and Thatcher and Delhi appear to be only rail sidings. Coming into La Junta, US 350 turns east on 5th St. then north on Grant Ave, then ends at US 50.

George Gallis in an e-mail mentioned to me one time he drove US 350 from La Junta to Trinidad on a Sunday evening. He saw three cars the whole way, and there was hardly ever a light in any direction.

US 350 is one of the very few US highways that are entirely within one state. In fact, AASHTO recommends that US highways confined to one state be decommissioned.

Despite being an angled highway, CDOT signs US 350 as east/west. I guess that way it matches the directions of its parent US 50, but it strikes more as a north-south route. If you were in Trinidad would you say you're "going east to La Junta"?

Photo Gallery:

  • SH 71 Intersection. Westbound on US 350 at the SH 71 intersection southwest of La Junta, looking into Comanche National Grassland. (May 2013)
  • Grant Avenue Turn. Eastbound on US 350 on 5th Street in La Junta approaching the left turn at Grant Avenue. (May 2013)
  • South on Grant Avenue. The view of US 350's first couple blocks heading south from US 50, with the turn ahead at 5th Street. (May 2013)
  • US 50 Intersection Approach and Destination Sign. Eastbound on US 350 (north on Grant Ave) as it intersects US 50 in La Junta. The destination sign is located on the far side of the intersection. (May 2013)

US 350 is an original 1926 US Highway in Colorado, commissioned generally along the alignment of the historic Santa Fe Trail. Entirely paved by 1938. The majority of its alignment has been unchanged, but one area that started out different was to the northeast of Beshoar Junction. At first, US 350 went east from there, then north on CR 83, east on CR 36, north on CR 85 then northeast, finally onto its current alignment south of Earl. US 350 was moved off of that stairstep alignment onto its modern one by 1937.

Also, each end has undergone numerous changes over the years:

In Trinidad, from the 1920s US 350 came into town southwest via Main St. and ended in the center of town at the US 85 intersection at Commercial St. US 160 appeared in the Trinidad area about 1930, so US 160 and 350 were comarked between US 85 and the split at Beshoar Junction. About 1959, the US 85-87 elevated expressway (modern I-25) appeared through Trinidad, so about that time US 160-350 was extended southwest down Main St. from Commercial to the new highway. I-25 was completed along the elevated highway in 1968, so US 350 ended at I-25's Exit 13B from then until the 1990s. The US 160 Kit Carson Trail bypass to the north of downtown was built about 1992. We can only assume it was about the same time that US 350 stopped being marked between Beshoar Junction and I-25 and US 160 instead became "To 350".

In La Junta, US 350 from the 1920s first came into town eastward on 6th St., north on Grant Ave., east on 5th, then north on Santa Fe Ave., ending at US 50 at 3rd St. By 1932, the section of US 350 east of Grant was chopped off and US 350 ended at Grant and US 50 on the west side of town. By 1934 US 350 didn't turn east on 6th, instead it continued northeast along the west side of Potter Park, ending at an intersection with US 50 that today doesn't exist.

At some point, year unknown but probably in the early 1960s, the road along the west side of Potter Park was obliterated and US 350 routed west on 5th St and north on Barnes Ave to US 50. According to right-of-way plans from the '60s CDOT at that time apparently had an idea to build an interchange at US 50 and Barnes Ave, leading to the alignment of US 350 along Barnes. However the interchange never came to fruition and it remained an at-grade intersection.

US 350 intersecting US 50 at Barnes lasted until summer 2012, when CDOT again changed it to go north on Grant Ave to US 50, rather than Barnes. The city of La Junta accepted the change in order to get truck traffic off of Barnes Ave, which is residential for the couple blocks US 350 was routed on it.

Following AASHTO's recommendation of single-state US routes, US 350 should be decommissioned. US 350 doesn't really deserve to be a US Highway. Can you say "SH 350"?

Related Site: US 350 Endpoints by Dale Sanderson


Location: Southwestern Mountains
Alignment: Spur southwest from from SH 149 south of Lake City


Location: Southern Western Slope
Alignment: Spur west from SH 145 north of Norwood


Location: Southern Western Slope
Alignment: Spur from Silverton north to Gladstone. Later became part of SH 110.


Location: Southern Western Slope
Alignment: Spur west from SH 145 at Norwood


Location: Southern Western Slope
Alignment: Spur south from SH 145 west of Placerville


Location: Northern Mountains
Length: 12mi
S End: Jct US 40 west of Craig
N End: Jct CR 106 & CR 3

This SH 355 became a state highway in 1956, and went from US 40 west of Craig north via what is now CR 7 and CR 3 for 12mi. Turned back in 1967. Was never paved.


Location: Southern Western Slope
Alignment: Spur east from SH 80 (current SH 141) south of Naturita


Location: Southern Western Slope
Alignment: Spur south from SH 145 at Vanadium


Location: Southern Western Slope
Alignment: Spur southeast from SH 145 east of Norwood

Thanks to Thomas Zieber for pointing out this one to me.


Location: Southern Western Slope
Alignment: Spur both north and south from SH 62 west of Dallas Divide


Location: Southern Western Slope
Alignment: Loop off the north side of SH 62 west of Ridgway


Location: Southern Western Slope
Length*: 5.20mi
NE End: Jct US 550 in Ouray
SW End: Camp Bird

Brought into the state system in 1939. Turned back in 1984, and is now FR 853. Was never paved.


Location: San Luis Valley
Alignment: Link from US 285 south of Saguache southeast to SH 17 at Moffat


Location: Southern Mountains
Alignment: Spur north from SH 149 at Creede. Also went south from Creede, then southwest back to SH 149, then spurred southwest along Trout Creek.


Location: Southern Mountains
Alignment: Spur east from US 84 south of Pagosa Springs


Location: Southern Mountains
Alignment: Spur northwest from SH 149 southwest of Creede


Location: Southern Mountains
Alignment: Spur east from US 84 at Chromo


Last updated 9 March 2014