New San Francisco-Oakland Bay Bridge Paving
O.C. Jones and Sons, Inc. put down the special epoxy asphalt for the new San Francisco-Oakland Bay Bridge (a self-anchored suspension (SAS) bridge). The asphalt is specially designed for long-span bridges that use orthotropic steel decks to minimize weight. The unique combination of epoxy and asphalt provides a highly durable road surface that handles high traffic loads with a long operating life and outstanding performance. Coming back full circle, it was O.C. Jones that placed the original epoxy asphalt on the old bridge back in the 1970s. Kevin Goddard, Area Manager, for O.C. Jones and Sons, Inc. said that the epoxy asphalt concrete used on the bridge was a unique material placed on steel decks. This was the only project in the United States that year that used that special material. Key Facts:
- 1976 – OC Jones paved 164,000 square yards of the upper deck
- 2002 – Construction began on the new $6.4 billion Bay Bridge. The West Span would be retrofitted through reinforcement and the East Span would be replaced entirely with a new design.
- The new 25-meter-long eastern span of the bridge is the first-ever, single-tower, self-anchored suspension (SAS) bridge and is the largest public infrastructure project in the history of California.
- 2013 – OC Jones placed two-1inch lifts of Epoxy Asphalt Concrete (EAC) on the eastbound and westbound lanes of the new SAS span of the Bay Bridge. This unique material was chosen because of its extreme durability, tractive benefits and lighter weight.
During the 5-day bridge shutdown over Labor Day weekend, multiple crews from OC Jones worked 24hr shifts to meet the scheduling deadline. For this portion of the project, crews worked with traditional AC mix and an open-graded asphalt cement.
- Project Length – 8.4 miles
- Area to Pave – 1.1 million square feet during bridge shutdown
- Amount of Conventional Asphalt Laid – 19,000 U.S. tons during bridge shutdown
- Paving required a large profile correction, up to 3 feet in some areas
- The application of each layer takes more than a dozen passes by the asphalt paver and rollers/compacters.
- The bridge opened to traffic on September 2, 2013