.- ,.
S AN ANTONIO RIVER AuTHORITY
Date : June 1 2, 1958
TO:
J. L. DICKSON
FROM:
K. W. DAVIS
SUBJECT: Loop 13 Bridge- Northwest Wing Wall.
REQUIRED:
COMMENTS: After looking over the pump situation this morning, I stopped
at the Loop 13 Bridge to take a look at the northwest wing wal 1.
There has been sufficient movement to squeeze a large part of
the pre-formed expansion joint mater ial out of the stream side
and the clearance around the gas main appears to theeye to be
less than it was several months ago when the matter was first
brought up.
I have requested Drought's office to check the marks that were
made at our request at that time and give us a report on the
apparent movement.
I consider that the gas main is sti l l cleared by a safe distance
but any further movement might create a critical sit uation wh ich
would hardly be compensated by chippi ng more concrete out around
the pipe . If excessive movement is indicated by the Drought
report it might be wise to break out this wing wal 1 and rebuild
it, possibly on the same footing but with a 1 ip poured in behind
the abutment wall to give it extra stability at the critical
point .
KWD/web