HomeMy WebLinkAboutOB 1 NEWPORT AVE EXT 03-17-86DATE:
MARCH 11, 1986
OLD BUSINESS
NO. 1
3-17-8~
'Inter- Corn
TO:
FROM:
SU BJ ECT:
WILLIAM HUSTON, CITY MANAGER
BOB LEDENDECKER, DIRECTOR OF PULBIC WORKS/CITY ENGINEER
NEWPORT AVENUE EXTENSION TO EDINGER STREET
RECOMMENDATION:
That the Tustin City Council, at their regular meeting of March 17, 1986,
authorize staff to re-apply to the railroad and Public Utilities Commission for an
at-grade crossing of Newport Avenue over the A.T. & S.F. tracks, if they are
desirous of pursuing the extension of Newport Avenue to Edinger Street.
BACKGROUND:
The City retained the consultant firm A.S.L. Consulting Engineers (ASL) in
October, 1985 to prepare a "precise" horizontal and vertical alignment study for
the extension of Newport Avenue southerly to Edinger. Street. This study was to be
based upon Alternate 3 of the Austin-Foust Circulation Analysis for the South
Newport/Edinger area.
The Austin-Foust Alternative 3 called for Newport Avenue to be extended in a
southerly direction from Kenyon Drive over the existing A.T. & S.F. Railroad
tracks to an intersection at Edinger Street and Del Amo Avenue about 300' ~
westerly of the existing Red Hill/Del Amo intersection.
DISCUSSION:
The initial directions provided to ASL was to prepare a precise alignment based
upon Orange County Environmental Management Agency typical sections which dictate
a design speed of 55 m.p.h, for both horizontal and vertical alignments.
Additional design criteria Was outlined as follows:
The proposed (new) Newport/Edinger Street intersection should remain at
approximately the same existing ground elevation of 85.0 ~ feet.
The proposed Newport/Edinger intersection should not be skewed greater
than 15 degrees.
Maintain access to all parcels adjacent to Newport Avenue betWeen Kenyon
Drive and the A.T. & S.F. Railroad tracks.
° Maintain maximum street grades of six percent.
° Maintain minimum vertical clearance of 23 feet from top of A.T. & S.F.
rail to bottom of roadway bridge structure.
MARCH 11, 1986
PAGE 2
Exhibit "A" is a result of several design layouts which appears to be a workable
alignment but does not meet the minimum design criteria as previously mentioned.
These unacceptable deviations are summarized below:
Design speed of 40 m.p.h, in lieu of the suggested 55 m.p.h~
° Six feet of fill at the intersection of Edinger St./Del Amo Ave.
Additionally, the excessive land acquisition requirements at the California
Apartments, Sycamore Garden Condominiums and Kenyon Drive Fourplexes tend to make
the project undesirable due to.increased right of way/relocation cost and impacts
to the remaining developments. Access roads to the various parcels are not shown
on Exhibit "A" but would be needed to properly provide access to the residential
developments northerly of the railroad tracks.
Staff would not recommend that the extension of Newport Avenue utilizing a grade
separation over the railroad tracks be pursued at this time. If desired, a new
application could be filed with the A.T. & S.F. Railroad and the Public Utilities
Commission for an at-grade or surface crossing at the railroad tracks. This
alignment study, as prepared by ASL, could be helpful in demonstrating that a
grade separation structure at this loction is not feasible. It is requested that
the City Council provide staff direction if they desire to re-apply for an
at-grade road crossing at this location.
~endecker
Director of Public Works/City Engineer
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