Complex sentence: Based on the engineer's recommendations, CSR made the necessary repairs on the critical bridges and CSR resumed operations August 8,2011, the FRA returned to inspect the bridges and made a recommendation that CSR cease operations until all bridge repairs were completed.
Split into simpler sentences: Based on the engineer's recommendations, CSR made the necessary repairs on the bridges and CSR resumed operations August 8,2011. The FRA returned to inspect the bridges and made a recommendation that CSR cease operations until all bridge repairs were completed.