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.. STATE OF CALIFORNIA - BUSINESS, TRANSPORT�N AND HOUSING AGENCY
•
PETE WILSON, Governor
DEPARTMENT OF TRANSPORTATION
BOX 23660
OAKLAND, CA 94623-0660
(510) 286-4444
Ms. Elizabeth Diamond
City Engineer
City of San Mateo
Public Works Department
330 West 20th Avenue
San Mateo, CA 94403
Dear Ms. Diamond:
April 18, 1995
4-SM-92-R9.7
4224-217600
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.. �! APR 2 1 ig
The Department of Transportation is preparing a project report to repair a 42 -inch RCP culvert.
The 468 foot culvert is located under Route 92, at 0.75 Miles West of the Alameda De Las Pulgas
Overcrossing and under Campus Drive, at approximately 0.4 Miles East of West Hillsdale Boulevard,
in the City of San Mateo.
Caltrans did a preliminary investigation of the 42" RCP culvert and concluded that the entire
42" pipe needs to be repaired, even though 200 feet of pipe is not within the States Right of Way. Our
Hydraulics Department recommended that a 30" Corrugated ADS HDPE Pipe culvert with a smooth
interior wall be placed inside of the existing 42" RCP. The space between the 30" ADS culvert and
the existing 42" RCP will be filled with Grout (Pipe Encasement). The new 30" ADS culvert will be
able to handle the 100 year storm runoff without significant increase in the headwater at the inlet.
Caltrans would like to set up a meeting to discuss the problem of repairing the existing 42"
RCP that is not within our State Right of Way. To set up a time for a meeting, please contact me or
the project engineer, Puklok Seetho, at (510)286-4760. Your earliest attention will be appreciated.
.1
Attachments
Sincerely yours,
ARLISSA PANG
District Branch Chief
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BASE MAP PRODUCED BY COURTESY
OF THE CALIFORNIA STATE AUTOMOBILE
ASSOCIATION COPYRIGHT OWNER.
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STATE OF CALIFORNIA
BUSINESS AND
TRANSPORTATION AGENCY
DEPARTMENT OF TRANSPORTATION
DISTRICT 4
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SN SAN MATEO CouNTY iN SAN MAT° AT
Q,75 M i L s wLSr or ALAMEhA LAS
PULGAS OvERcRoscf IvG
LOCATION MAP
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