HomeMy WebLinkAbout3557; Carlsbad Blvd Las Encinas Creek & Bridge; Carlsbad Blvd Las Encinas Creek & Bridge; 2009-06-172009
Bridge Inspection Report
For
City of Carlsbad
as Encinas Creek
Picture taken on 6/16/2009
Jack L Abcarius
Nolte Associates, Inc.
6/17/2009
June 17, 2009
Mr. John Cahill
City of Carlsbad
Department of Public Works
Municipal Projects Manager
1635 Faraday Avenue
Carisbad, CA 92008
SUBJECT: VISUAL INSPECTION (3''' of 4)
Carlsbad Boulevard Bridge over Las Encinas Creek
Bridge No. 57C-0214
City of Carlsbad, California
Mr. Cahill:
In accordance with our Agreement, Nolte performed the third visual inspection of the subject
bridge. The inspection took place on June 16, 2009. This report will highlight any changes
observed since our last inspection (3/17/2009). Our observations and comments follow.
Current Condition of Structure:
Abutment Wingwalls
Upon observation, there looks to be littie difference since the last inspection regarding corrosion
to the wingwalls on the west and east side.
Northwest Abutment During
Inspection on 3/17/09
^<.^-r: •Xs
Northwest Abutment During
Inspection on 6/16/09
Concrete Railing - West Side
Being closest to the ocean side, this railing showed the most deterioration due to exposure to the
corrosive environment. Since our last inspection, further spalling of the barrier concrete has
occurred in two locations. A chunk of concrete near the south end of the bridge has fallen away.
The other area where spalling has occurred is on the outside face of the bridge at the base of the
railing.
Fallen Piece
West Barrier During
Inspection on 3/17/09
West Barrier During
Inspection on 6/16/09
Fallen Piece
West Barrier During
Inspection on 3/17/09
West Barrier During
Inspection on 6/16/09
Concrete Railing - East Side
The east side railing was observed to have no significant changes since the last inspection.
East Barrier During
Inspection on 6/16/09
Girders
The girders are identified in numerical order (1 thm 12) from West to East for clarity. During
our 2005 inspection, all of the girders were examined very closely. Due to the large amount of
water present undemeath the bridge during this inspection and the previous one, close
examination of girders 5 thm 12 was not possible however we were able to get some photos of
the visible surfaces. The notes from the inspected girders are listed below:
Girder # 1 ~ The girder's condition was observed to be unchanged since the last inspection.
Girder # 2 ~ The girder's condition was observed to be unchanged since the last inspection.
Girder # 3 ~ The girder's condition was observed to be unchanged since the last inspection.
Girder # 4 ~ The girder's condition was observed to be unchanged since the last inspection.
I
Girder # 5 ~ The visible surfaces of girder 5 appear to be in good condition. No new visible
cracks to report.
Girder 5
Girder 5 During
Inspection on 6/16/09
Girder # 6 ~ The location of concrete spalling as reported in the original inspection report
(2005) looks to not have increased in size.
Exposed
Rebar
Girder 6 During
Inspection on 6/16/09
Girder # 7 ~ As previously reported, most of the bottom cover concrete has spalled off
exposing the rebar. One of the exposed longitudinal bars has been bent back in
the opposite direction.
Girder 7 During
Inspection on 6/16/09
Distorted
Rebar
Girders #8-11 - All visible faces of the girders still appear to be in fairly good condition.
Girder 8
Girder 11
Girder 10
Girder 9
Girders 8-11 During
Inspection on 6/16/09
Girder # 12 ~ the East face of girder 12 still appears to be in good condition.
Deck Surface
The relatively new Asphalt Concrete surfacing is still in very good condition.
Summary
All of the changes noticed since the last inspection occurred on the west side of the bridge. Due
to its accelerated deterioration when compared to the rest of the structure, the western portion of
the bridge continues to be the primary concem. Although the eastem barrier has sustained some
damage/corrosion, the eastem portion of the bridge appears to be in fairly good condition when
compared to the west side and has not noticeably deteriorated since the last inspection.
Girders 1 through 4 from the west side continue to be in the worst condition. Even though no
significant deterioration of the girders has occurred since the last inspection, continued spalling
and rebar corrosion is imminent.
During future inspections, we will continue to document additional degradation of the bridge to
ensure that the structural integrity of the bridge is not compromised.
Should you have any questions conceming this letter, please feel free to contact me at (858) 385-
2128.
Sincerely,
Nolte Associates, Inc.
J^ck Abcarius, P.E.
ngineering Manager