The Pittsburgh Press from Pittsburgh, Pennsylvania • Page 320

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6-5-77 Some Ca is a trademark Tiber Industries, a subsidiary of Celanese Corporation. Anatomy Of A Bridge Continued Electrical Code. Two of the main switch enclosures and a fuse box are broken and can't be locked. None of the tower lighting systems operates; electrical boxes along the east sidewalk cannot be opened because of the buckling, and electrical conduit has completely rotted, leaving conductors exposed and unprotected. Only one of six navigation lights for river traffic didn't have parts missing or broken because of vandalism.

The underwater portions of two granite piers had to be inspected entirely by touch by divers because heavy barge traffic constantly churned up the murky river bottom and they couldn't see. The piers were found to be in relatively good condition, except some joints above the water line must be repointed. So what will motorists get for the $1.5 million repair job? Basically, all the problems cited by the consultant would be corrected. Cracks in anchorage vaults will be sealed and sump pumps installed to keep water from doing further damage if it does seep inside. Broken wires will be repaired, the grid deck will be rewelded to its steel braces, both sidewalks will be replaced, electrical and lighting deficiencies corrected, missing doors replaced, tower openings screened to keep out pigeons, cracks sealed and patch plates fastened to weakened, stressed beams.

Trolley tracks will be removed, new waterproof expansion dams will be installed, and the entire span will receive a new threeinch-thick layer of asphalt. BADLY DETERIORATED FULL LENGTH OF BRIDGE NOTE: CONCRETE UNDER STEEL CURS BADLY DETERIORATED; FULL LENGTH OF BRIDGE 1240 TO 3'0 -TRANSVERSE CROSS STRINGER CURB STRINGER Corroded steel will be sandblasted and painted with two coats of primer, then the entire structure will receive a finishing coat of paint. As of now, the county plans to stage the work to maintain one lane of traffic in both directions, although this convenience to drivers will add at least $25,000 to the bill. Lest all this sound like a safety indictment against the county and the 10th Street Bridge, engineers point out two things. First, the consultants' report should not scare motorists into feeling the bridge will fall into the Monongahela River tomorrow.

Second, $1.5 million in prevention now may be worth $25 million in cure later, because if the county chose to ignore the current deterioration, complete replacement would be the eventual and only THE PITTSBURGH PRESS ROTO, JUNE 5, 1977.