Project: Mo. Route 370 Bridge
Summary
Missouri Route 370 is a 12-mile long highway that connects Interstate 270 in Bridgeton with Interstate 70 in St. Peters via the newly constructed Discovery Bridge over the Missouri River. The project was undertaken to address a deteriorating two-lane Highway 115 Bridge (Rock Road Bridge) and to relieve traffic on the Blanchette Bridge (I-70).
Characteristics and Setting
Classification/Type
Bridge
Transportation Mode
Highway
Usage
60,000
Length (mi)
12.00
Economic Distress
0.98
Population Density (ppl/sq mi)
1,250
Population Growth Rate (%)
0.4%
Employment Growth Rate (%)
1.0%
Market Size
891,052
Airport Travel Distance (mi)
19.0000
Topography
14
Geography
Region
Great Lakes / Plains
State
MO
County
St. Charles, St. Louis
City
St. Charles
Urban/Class Level
Mixed
Local Area
N/A
Impact Area
N/A
Transportation System
Highway
Timing
Initial Study Date
1987
Post Construction Study Date
2007
Construction Start Date
1988
Construction End Date
1996
Months Duration
N/A
Costs
Project Year of Expenditure (YOE)
1996
Planned Cost (YOE $)
N/A
Actual Cost (YOE $)
$343,000,000
Actual Cost (2022$)
$793,561,200
Pre/Post Conditions
NOTE: All pre/post dollar values are in 2022$
Transportation
| Measure | Pre project | Post project | Change | % Change |
|---|
Impacts
NOTE: All impact dollar values are in 2022$
| Measure | Total |
|---|
Case Location
Narrative
Mo. Route 370 Bridge
Attachments
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