Year-to-date pulp and paper traffic at 321,526 carloads was off 0.5% from the same 35-week period last year, according to the American Assn of Railroads.
US pulp and paper volumes in the week were 8.8% higher, Canada was up 7.4% and Mexico was unchanged.
North American lumber and wood products rail traffic for the week ending Sept. 4 at 4,424 carloads was off 1.8% and year-to-date at 167,318 carloads was up 8.8%.
AAR said weekly rail carload volume on Sept. 4 set a new 2010 record for the second consecutive week. US railroads originated 305,000 carloads during the week, up 6.9% compared with the same week in 2009, and at comparable levels to the same week in 2008.
Monthly rail carloads for August were up 5.7% compared with 2009, but still down 11.6% compared with August 2008. According to AAR's September Rail Time Indicators Report, the weekly average of 294,862 carloads last month was the highest since November 2008. Intermodal traffic in August was up 19.7% compared with the same month in 2009, but down slightly by 0.3% compared with August 2008.