HomeMy WebLinkAboutItem 3a: Santa Anita Grade Separation Bridge Design for Gold Line Foothill Extension ProjectDATE: April 6, 2010
TO: Mayor and City Council
STAFF REPORT
Development Services Department
FROM: Jason Kruckeberg, Development Services Director /Assistant City Manager
Philip A. Wray, Deputy Director of Development Services/ City Engineer
By: Linda Hui, Transportation Services Manager
SUBJECT: SANTA ANITA AVENUE GRADE SEPARATION BRIDGE DESIGN AND
OTHER IMPROVEMENTS FOR INCORPORATION INTO THE GOLD
LINE FOOTHILL EXTENSION PROJECT
Recommendation: Approve
SUMMARY
At the special City Council Study Session on March 23, 2010, staff presented to the
Council for consideration three alternative bridge design concepts for the Santa Anita
Avenue grade separation. The Council selected a preferred alternative for further
refinement. As directed by the Council, the preferred alternative design has been
refined. It is recommended that the Council approve the final preferred alternative
design concept (Attachment A).
BACKGROUND
The Gold Line Foothill Extension Construction Authority (Construction Authority) is
currently preparing a detailed project scope and bid documents for the next phase of the
Gold Line construction (Phase 2A) from Pasadena to the Azusa Pacific /Citrus College
Station. The Main Alignment Bid Package which includes tracks, stations, and grade
separations, is currently under development and is expected to be released in June of
2010.
On February 16, 2010, staff presented to the City Council the opportunity to consider
additional improvements on elements such as the Santa Anita Grade Separation Bridge
structure, various retaining walls, and the station itself, with the understanding that any
additional costs associated with the improvements are the responsibility of the City. At
Staff Report
April 6, 2010
Page 2
the meeting, the Council expressed interest in exploring improvements to the bridge
design. The Council gave staff direction to prepare design concepts based on some
general guidelines. The guidelines were expressed as a modest, conservative design
with a historic, WPA, Art Deco motif using concrete without adding other materials. The
Council requested that a concept design be brought back for further review and
approva I.
DISCUSSION
At a follow -up special City Council Study Session on March 23, 2010, staff presented
three alternative bridge design concepts depicting the Council's directions. The three
concepts included 1) single arch bridge, 2) double arch bridge, and 3) straight -line
bridge with Art Deco motif. Multiple railing styles and architectural wall treatments were
also presented. The Council selected the third bridge concept depicting an Art Deco
motif for further refinement with open railing details and inlayed abutments. The Council
also directed staff to bring the refined design concept back for final approval. Once
approved, staff will submit the final design concept to the Construction Authority for
inclusion in the bid package.
In addition, the Council expressed an interest in changing the facade of the Huntington
Drive Bridge to be consistent with the Art Deco style of the Colorado Boulevard Bridge
and the future Santa Anita Avenue Bridge. Staff is in the process of exploring this
improvement with the Construction Authority.
FISCAL IMPACT
No immediate fiscal impact.
RECOMMENDATION
Staff recommends that the Council approve the preferred alternative design concept as
attached.
Approved: yN.a - �� - �
JK:PAW:LH:pa
Donald Penman, City Manager
Attachment A: Proposed Design Concept
Staff Report
April 6, 2010
Page 1
- 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 NMI 1 1 1 1 1 1 1 1
P
�I �
Final Concept
1T2'.
1
N. SANTA ANITA AVENUE
(View looking North
p
ATTACHMENT A