HomeMy WebLinkAboutRDA CIRCULATION STDY 08-19-85 REDE!ELOPMENT AGENCY
NO. 5
8-1 85
Inter Com
TO:
FROM:
SU BJ ECT:
WILLIAN HUSTON, EXECUTIVE DIRECTOR,
TUSTIN CONNUNITY REDEVELOPNENT AGENCY
BOB LEDENDECKER, DIRECTOR OF PUBLIC WORKS/CITY ENGINEER
SOUTH NEWPORT-EDINGER CIRCULATION STUDY
RECOMMENDATION:
That the Tustin Community Redevelopment Agency, at their meeting of August 5,
1985, authorize staff to solicit proposals for consultant services for preparation
of a precise horizontal and vertical alignment for the extension of Newport Avenue
based upon Alternative 3, inclusive of staff variation and approve a supplemental
budget appropriation in the amount of $40,000.00.
BACKGROUND:
In January, 1985, Austin-Foust completed the South Newport-Edinger Circulation
Study which contained three alternatives for the potential extension of Newport
Avenue southerly to Edinger Street. A copy of each of these alternatives is
attached for information.
At the July 8, 1985 Tustin Planning Commission meeting, the Commission approved a
staff recommendation to deny the proposed Lincoln Properties development of a 160
unit multi-family residential complex on the westerly side of Newport Avenue and
southerly of Kenyon Drive. Additionally, the Commission requested the Tustin
Com~nity Redevelopment Agency (South Central Project area) to prepare a specific
Newport Avenue alignment to resolve the potential right-of-way .needs as it relates
to the Lincoln Properties development.
DISCUSSION:
Following is a summary of each Newport Avenue extension and their preliminary
estimates of cost:
Alternative I
This alternative requires an overcrossing of the railroad with a connection to
Edinger St. at a location opposite the existing freeway on-off ramps. This
alignment is located primarily westerly of existing Newport Avenue and traverses
through the previously mentioned Lincoln Properties parcel.
Alternative I maintains access to all existing developed and undeveloped parcels
within the area by use of frontage roads adjacent to Newport Avenue. Recommended
minimum design requirements for both horizontal alignments (radii of curves) and
vertical alignment (maximum roadway gradient) are not met in this alternative.
The estimated cost for this alternative is $9,000,000.00 inclusive of construction
and right-of-way.
SOUTH NEWPORT-EDINGER CIRCULATION STUDY
JULY 26, 1985
PAGE 2
Alternative 2
This alternative is proposed as an underpass below the railroad with a connection
to Edinger St. just easterly of the freeway on-off ramps. This alignment impacts
the easterly edge of Lincoln Properties parcel, the westerly edge of the
California Apartments and bisects the Case-Swayne Warehouse structure southerly of
the railroad.
Alternative 2 maintains access to all existing developed and undeveloped parcels
within the area by use of frontage roads adjacent to Newport Avenue. Recommended
minimum design requirements for the horizontal alignment (radii of curves) are not
met in this alternative.
The estimated cost for this alternative is $11,525,000.00 inclusive of
construction and right-of-way.
Alternative 3
This alternative can be utilized as either an overpass or underpass with relation
to the railroad and is connected to Edinger St. at a point easterly of the freeway
on-off ramps. It also provides for the realignment of Del Amo Ave. southerly 'of
Edinger St. to meet Newport Ave. This alignment is located farther east than
Alternative 2 which results in a greater impact to the California Apartments and
lesser i~act to the Lincoln Properties development. The Case-Swayne Warehouse
structure is also impacted.
Alternative 2 maintains access to all existing developed and undeveloped parcels
within the area by use of frontage roads adjacent to Newport Avenue. Recommended
minimum design requirements for the horizontal alignment {radii of curves} are not
met but the vertical alignment minimum requirements are met if Edinger St. is
relocated southerly as shown.
The estimated cost for this alternative is $11,350,000.00 inclusive of
construction and right-of-way.
Staff feels that a variation in this alternative might be feasible, wherein the
realignment limits would be started further north which would result in additional
encroachment into the California Apartment complex and encroachment into the
Sycamore Gardens Condominim complex. This variation would undoubtedly increase
the project cost, but would also help minimize the deviation from minimum design
standards.
Alternative 3 as an overpass with the variation as mentioned above is staff's
recommendation for further study and the preparation of a precise alignment. It
is suggested that a precise alignment be prepared for both the horizontal and
vertical elements of the roadway. If this alternative proves to be feasible, it
is further suggested that the precise right-of-way requirements be calculated so
that an accurate cost estimate for the project can be completed.
SOUTH NEWPORT-EDINGER CIRCULATION STUDY
JULY 26, 1985
PAGE 3
Staff is requesting that the Tustin Community Redevelopment Agency authorize staff
to solicit proposals for consultant services to prepare a precise horizontal and
vertical alignment for the extension of Newport Avenue based upon Alternative 3
including the variation as recommended by staff. The estimated cost for these
services is approximately $40,000.00.
Director of Public Works/City Engineer
BL:jr