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[Blog](https://blog.spongejet.com/) - [Resource Library](https://www.spongejet.com/support/resources-support/resource-library/) - [Training](https://www.spongejet.com/training/) - [Contact](https://www.spongejet.com/contact/) - [About Sponge-Jet](https://www.spongejet.com/about-sponge-jet/) - [Event Schedule](https://www.spongejet.com/events/) - [Become a Distributor](https://info.spongejet.com/become-a-distributor) ![1000x500.jpg](https://info.spongejet.com/hs-fs/hubfs/1000x500.jpg?width=1000&name=1000x500.jpg "1000x500.jpg") # Marine Management Checklist Series # Longfellow Bridge Case History Video ![Longfellow Bridge Restoration (Final)](https://play.vidyard.com/KYDCzRQK4oAji26GXTqpoh.jpg?)    The historic restoration of Boston's Longfellow Bridge is now complete! The large-scale granite restoration project included onsite blasting by [United Stone](http://www.unitedstoneandsite.com/), as well as dismantling the bridge’s iconic Rockport granite “salt and pepper” towers piece-by-piece, and then transporting them to nearby workyards in Charlestown via barge for offsite restoration. The now pristine towers were reassembled using a mix of modern and historic construction technology. Skilled masons at United Stone were able to clean ornate granite carvings as well as the large granite blocks using the same equipment and media. Jeff Hartwell, VP, Operations for United Stone and Site Inc. offered, “The Sponge-Jet system has worked great for us on the Longfellow Bridge and other projects. Once initial setup is in place, the system can do its job with a two-man crew depending on access. You can’t say enough about the eco-friendly aspect of the Sponge Media. All in all you would have to force us to go back to acidic cleaners or conventional bucket and brush-cleaning.”   ![tellus_Banner](https://info.spongejet.com/hs-fs/hubfs/tellus_Banner.jpg?width=603&name=tellus_Banner.jpg) [![spongejet](https://info.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/logo.png)](https://www.spongejet.com/) - - - - - [+1 603-610-7950](tel:+1-603-610-7950) - [Contact us](https://www.spongejet.com/contact/) Phone: +1 603-610-7950 | 14 Patterson Lane, Newington, NH 03801 USA - [© 2015 Sponge-Jet, Inc.](https://www.spongejet.com/copyright-info/) - [Contact](https://www.spongejet.com/contact/) - [Support](https://www.spongejet.com/support/) - [Privacy Policy](https://www.spongejet.com/privacy-policy/) - [Terms & Conditions](https://www.spongejet.com/terms-conditions/)