|
Name
|
Highway
|
Elevation
|
Maximum Grade
|
|
Independence open seasonally
|
SH 82
|
12,095’
|
6%
|
|
Loveland
|
U.S. 6
|
11,992’
|
6%
|
|
Hoosier
|
SH 9
|
11,541’
|
8% N
|
|
Slumgullion
|
SH 149
|
11,361’
|
9.4% N; 7.9% S
|
|
Fremont
|
SH 91
|
11,318’
|
5.7%
|
|
Berthoud
|
U.S. 40
|
11,315’
|
6.1% N; 6% S
|
|
Monarch
|
U.S. 50
|
11,312’
|
6.4%
|
|
Eisenhower Tunnels Approaches
|
I-70
|
11,158’
|
6% W
|
|
Red Mountain
|
U.S. 550
|
11,018’
|
7%+
|
|
Molas
|
U.S. 550
|
10,910’
|
7% +
|
|
Spring Creek
|
SH 149
|
10,901’
|
7.5%
|
|
Wolf Creek
|
U.S. 160
|
10,850’
|
6.8%
|
|
Vail
|
I-70
|
10,666’
|
7%
|
|
Coal Bank
|
U.S. 550
|
10,640’
|
6.5%
|
|
Tennessee
|
U.S. 24
|
10,424’
|
6%
|
|
Cameron
|
SH 14
|
10,276’
|
3.8% E
|
|
La Manga
|
SH 17
|
10,230’
|
5.2%
|
|
Lizard Head
|
SH 145
|
10,222’
|
4.1%
|
|
North/North Cochetopa
|
SH 114
|
10,149’
|
6%
|
|
Cumbres
|
SH 17
|
10,022’
|
6.3%
|
|
Kenosha
|
U.S. 285
|
10,001’
|
5.3% E
|
|
Red Hill
|
U.S. 285
|
9,993’
|
6%
|
|
Cucharas
|
SH 12
|
9,941’
|
5.9% N; 5.4% S
|
|
Squaw
|
SH 103
|
9,807’
|
6%
|
|
Willow Creek
|
SH 125
|
9,621’
|
6.3%
|
|
Gore
|
SH 134
|
9,527’
|
6.3%
|
|
Wilkerson
|
U.S. 24
|
9,507’
|
5.8%
|
|
Rabbit Ears
|
U.S. 40
|
9,426’
|
6.8% N
|
|
La Veta/North La Veta
|
U.S. 160
|
9,413’
|
6%
|
|
Trout Creek
|
U.S. 24/285
|
9,346’
|
5.2%
|
|
Ute
|
U.S. 24
|
9,165’
|
5.6% E
|
|
Poncha
|
U.S. 285
|
9,010’
|
3%
|
|
Dallas Divide
|
SH 62
|
8,970’
|
6.4% E; 5% W
|
|
Muddy
|
U.S. 40
|
8,772’
|
5.6%
|
|
McClure
|
SH 133
|
8,755’
|
8%
|
|
Douglas
|
SH 139
|
8,268’
|
7%
|
|
Raton
|
I-25
|
7,834’
|
6%
|
SH 5 to Mt. Evans, which reaches an elevation of 14,150’, is not considered a mountain pass. Maximum is grade 9% to Summit Lake; 15% beyond Summit Lake. This is the highest paved road in North America and is open seasonally.
Milner Pass (10,758’) and Trail Ridge High Point (12,183’) are on U.S. 34 in Rocky Mt. National Park but are not maintained by CDOT. Maximum grade on both is 5.4%. Open seasonally.
