RPT - ONE PAGERS - Minnesota State Legislature

Schedule:
Environmental Document Approval Date: Need Unknown
Municipal Consent Approval Date: Need Unknown
Geometric Layout Approval Date: Need Unknown
Construction Limits Established Date:
Original Letting Date: 1/1/2014
Current Letting Date: 3/22/2013
Construction Season: 2013-2014
Estimated Substantial Completion: 2014
Project History:
PROJECT SUMMARY
Hwy. 99
Bridge over Minnesota River in St. Peter (St. Peter Bridge)
Built in 1931, Bridge 4930 is a steel truss bridge
over the Minnesota River on the east side of St.
Peter. This bridge is on the National Register of
Historic Places and is one of the 24 bridges
selected across the state of Minnesota for special
preservation. Bridge 4930 is a fracture critical
bridge located in the 100-year flood elevation with
corrosion in the steel members and deterioration
of concrete in the bearing support and parapet
wall. It has a sufficiency rating of 56 and was last
inspected on September 4, 2008. Some repairs
and rehabilitation have taken place in the 1950s,
1960s and 1980s.
Project Benefits:
Provides a safe crossing of the Minnesota River,
creates load path redundancy, improves drainage,
preserves the historic Bridge 4930
Project Risks:
Addressing the fracture critical requirements while
preserving the historical nature and appearance of
the bridge, foundation and scouring issues,
reconstructing abutment around existing storm
tunnel, raising the bridge to allow for more
waterway opening, adding more piers in the river,
if a new bridge is built, flooding during construction
Annual Report on Major Highway Projects
Minnesota Department of Transportation
Bridge 4930
State Project No. 4008-25
Project Description:
Alternative 1: Rehabilitation of Bridge 4930
in-place. Alternative 2: New bridge on
existing alignment with rehabilitation and
relocation of Bridge 4930 to serve as a trail
crossing for the City of St. Peter.
Total Project Cost Estimate (millions)
Date in which the project entered into the STIP:
Construction Letting:
Other Construction Elements:
Engineering:
Right of Way:
Recent Changes and Updates:
40
15
5
51
20
Nicollet
21
74
Kasota
Saint Peter
41
45
102
102
MINNESOTA R
4930
102
23
Le Sueur
Historic Bridge under review. The costs estimate are based on the replacement for the
current Bridge but the repair costs may be substantially less.
Key Cost Estimate Assumptions:
Baseline Est. Current Est.
27.3
8.9
5.5
2.5
Total: $ 44.2 - $
Cost estimate is from the Cost Risk Assessment/Value Engineering workshop held on
November 3, 2008. The 90% probability of the most expensive alternative (Alternative 2)
was used.
$
$
$
$
- $
- $
- $
- $
107
18
32.7
9.1
6.5
2.6
50.8
Construction cost estimates are adjusted to the mid-year of construction, using inflation rates provided by
OCPPM.
Minnesota Department of Transportation
District 7
2151 Bassett Drive
(507) 304-6100
District Engineer: James Swanson
Project Manager: Brett Benzkofer
Original date of Posting: Jan 2009
Revised Date: 1/15/2011
110
20
19
109
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