Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Project 0040-0146, Replacement of Bridge No. 02510 carrying Route 82 over Strongs
BrookEast Haddam
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Bridge Aerial View
Bridge 02510
Strongs Brook
Route 82
N
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Project Location
Bridge No. 02510
Strongs Brook
Route 82
N
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Existing Roadway
Looking East Looking West
CONNECTICUT DEPARTMENT OF TRANSPORTATION
South Elevation
Elevations
North Elevation
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Structure Deterioration
CONNECTICUT DEPARTMENT OF TRANSPORTATION
The Bridge is adjacent to two driveways that share an entrance. Due to the proximity of the driveways to thebridge, a protective Metal Beam Rail (MBR) system cannot be attached to one side of the concrete parapet of thebridge, which leaves a dangerous blunt end exposed for vehicles travelling along Route 82 (see circle in photo).An MBR system is attached to the other side of the parapet (see arrow).
Existing Safety Concerns
Metal Beam Rail (MBR) systemattached to concrete parapet
CONNECTICUT DEPARTMENT OF TRANSPORTATION
The bridge (and channel) are proposed to be relocated to the south along Route 82 to permit the installation of aprotective rail system on the new concrete barrier to eliminate a dangerous blunt end condition.
Existing Safety Concerns
Bridge 02510 is proposed to be relocated away from theShared driveway entrance to accommodate safety improvements.
Approximate new location(proposed)
Existing Bridge location
CONNECTICUT DEPARTMENT OF TRANSPORTATION
• In addition, the stream at inlet runs too closely and parallel to the roadway.
• The roadway is settling at the inlet side.
• Vertical posts have virtually no room for deflection.
Existing Safety Concerns, continued…
CONNECTICUT DEPARTMENT OF TRANSPORTATION
• Access road
• Temporarily relocate overhead utilities
• Implement detour
• Install cofferdam at new proposed bridge location
• Install box culvert & lay out proposed stream realignment
• Remove cofferdam & relocate water to new stream
• Remove existing structure and stone wall
Proposed Project Scope
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Proposed Project Schedule• Schedule:
Anticipated construction schedule start: April 2022
• Duration:
Project construction duration: One construction season (10 mo.)
• Maintenance and Protection of Traffic:
Alternating one-way: 5 weeks
Detour route: 8 weeks
N
CONNECTICUT DEPARTMENT OF TRANSPORTATION
• Directional Detour (some local roads)
• Eastbound detour includes Routes434 & 11, it is approx. 10 miles long
• Westbound detour includes Routes156 & Salem/White Birch rd. and is approx. 5 miles long
Proposed Passenger Vehicle Detour
CONNECTICUT DEPARTMENT OF TRANSPORTATION
Proposed Truck Detour
N
CONNECTICUT DEPARTMENT OF TRANSPORTATION
• ROW impacts include constructioneasements and permanent (partial)takes at the bridge location forconstruction of the bridge and forthe proposed stream realignment.
Considerations
• Overhead utilities will be relocated at a greater offset to Route 82.