Complex sentence: At the time, it was hoped that the repairs would allow 20 to 25 years of continued use, though a new US 34 bridge would mean that heavy truck traffic could be moved off of the Plattsmouth Bridge.
Split into simpler sentences: At the time, it was hoped that the repairs would allow 20 to 25 years of continued use. Though a new US 34 bridge would mean that heavy truck traffic could be moved off of the Plattsmouth Bridge.