Capable stewards
What’s a trunnion?
It takes some special parts to keep a 100+-year-old bridge working properly. Some of these parts include trunnions and sheaves. A trunnion is the axle at the top of each tower of the Interstate Bridge […]
repair
Maintaining the system
Taking care of tunnels takes a team
Pretty much anywhere you travel in Oregon, you’ll encounter a tunnel. There’s a busy one on Interstate 84 between Portland and Hood River that requires regular maintenance. It’s the historic Tooth Rock Tunnel, built in […]