[PRCo] Re: Weak Bridges

[Fred Schneider]

That was the weight of the cartons on the trailer that I was  
remembering.

On Aug 16, 2007, at 11:12 PM, Herb Brannon wrote:

> Even a 40 foot NABI lowfloor city bus, these days, weighs 40,550  
> empty !
> Fred Schneider <fwschneider at comcast.net> wrote:  I knew I could  
> kick around a little dust.... I remember adding up
> trailer weights at Norwalk Truck Lines around 36,000 lbs. when I
> worked for them in 1963. Loads around 60,000 are probably more or
> less normal today with 53-foot semi trailers.
>
>
>
> On Aug 15, 2007, at 10:04 PM, John Swindler wrote:
>
>>
>>
>> That I-35 bridge was under reconstruction, so had construction
>> equipment
>> sitting in some of the lanes, and the stopped traffic concentrated
>> vehicle
>> weights on the spans. With moving traffic, there is empty space
>> between
>> vehicles.
>>
>> So Rankin and Donora bridges should not be a concern if traffic is
>> light and
>> moving. Our automobiles are not the problem.
>>
>> PennDOT issued a news release to calm the masses that if bridge is
>> open, it
>> is safe. Wasn't the I-35 bridge open, and wasn't the I-95 bridge
>> in Conn.
>> open some 20 years ago?
>>
>> But then again, infrastructure repair doesn't generate votes. And
>> what was
>> the max. axle load 30/40/50 years ago when these bridges were
>> designed and
>> what is it today?
>>
>> John
>>
>>
>>> From: Fred Schneider
>>> Reply-To: pittsburgh-railways at dementia.org
>>> To: pittsburgh-railways at dementia.org
>>> Subject: [PRCo] Weak Bridges
>>> Date: Wed, 15 Aug 2007 19:22:47 -0400
>>>
>>> On the subject of weak bridges, Pennsylvania's politicians finally
>>> bit the bullet and today released a list of structurally deficient
>>> bridges. Except for a couple in Carbon County and one over the
>>> Lehigh River at West Catasauqua, most are either in Erie County  
>>> (both
>>> eastbound and westbound spans on I-95 at Northeast PA), or  
>>> Allegheny,
>>> or Beaver or Washington counties. The Rankin Bridge, that replaced
>>> the one that fell under the over loaded work car in 1937, is one of
>>> those on today's list of spans you really don't want to cross.
>>> Another (get this one Jerry) is the Donora to Monessen span.
>>>
>>>
>>
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