Project: I-70 Glenwood Canyon
Summary
I-70 through the Glenwood Canyon, which required double-decking the existing two-lane highway, included over 40 bridges and viaducts, and five tunnels. The widening of this route has significantly improved safety, provides access to the river and tourist destinations, and has become a major thoroughfare for freight transportation across Colorado.
Characteristics and Setting
Classification/Type
Widening
Transportation Mode
Highway
Usage
17,000
Length (mi)
12.50
Economic Distress
1.41
Population Density (ppl/sq mi)
17
Population Growth Rate (%)
2.5%
Employment Growth Rate (%)
4.5%
Market Size
14,621
Airport Travel Distance (mi)
56.1500
Topography
17
Geography
Region
Rocky Mountain / Far West
State
CO
County
Garfield
City
Glenwood Springs
Urban/Class Level
Rural
Local Area
N/A
Impact Area
N/A
Transportation System
Highway
Timing
Initial Study Date
1987
Post Construction Study Date
1997
Construction Start Date
1987
Construction End Date
1992
Months Duration
N/A
Costs
Project Year of Expenditure (YOE)
1992
Planned Cost (YOE $)
N/A
Actual Cost (YOE $)
$490,000,000
Actual Cost (2022$)
$1,346,878,700
Pre/Post Conditions
NOTE: All pre/post dollar values are in 2022$
Transportation
| Measure | Pre project | Post project | Change | % Change |
|---|
Impacts
NOTE: All impact dollar values are in 2022$
| Measure | Total |
|---|
Case Location
Narrative
I-70 Glenwood Canyon
Attachments
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