--- title: How Boston's Longfellow Bridge Was Reborn description: The historic restoration of Boston's Longfellow Bridge is now complete! The large scale granite restoration project included both onsite and offsite cleaning of the bridge’s iconic Rockport granite. Skilled masons were able to clean ornate granite carvings as well as large granite blocks using the same Sponge-Jet equipment and media. image: https://blog.spongejet.com/hubfs/Finished%20Longfellow%20Header.jpg --- - [+1 603-610-7950](tel:+1-603-610-7950) - [Home](https://www.spongejet.com/) - [Log In](https://www.spongejet.com/login) - [Contact](https://www.spongejet.com/contact/) English Espanol Japanese Korean Chinese Deutsch Netherlands Search - Products - Resources - Web Pages Find the best products for your job [![spongejet](https://blog.spongejet.com/hs-fs/hubfs/Spongejet-Oct2015-Theme/Images/logo.png?width=211&height=49&name=logo.png "spongejet")](https://www.spongejet.com/) - [Home](https://www.spongejet.com/) - [How It Works](https://www.spongejet.com/how-it-works/) - [Videos](https://www.spongejet.com/video-gallery/) - [Why Sponge-Jet?](https://www.spongejet.com/why-sponge-jet/) - [Conservators & Historic Architects](https://www.spongejet.com/why-sponge-jet/conservators-historic-architects/) - [Construction & Project Managers](https://www.spongejet.com/why-sponge-jet/construction-project-managers/) - [Contractors & Service Professionals](https://www.spongejet.com/why-sponge-jet/contractors-service-professionals/) - [Corrosion & Maintenance Professionals](https://www.spongejet.com/why-sponge-jet/corrosion-maintenance-professionals/) - [Executives, Operations Managers](https://www.spongejet.com/why-sponge-jet/executives-operations-managers/) - [Health, Safety and Industrial Hygienists](https://www.spongejet.com/why-sponge-jet/health-safety-industrial-hygienists/) - [Reliability Engineers](https://www.spongejet.com/why-sponge-jet/reliability-engineers/) - [Products, Tools and Media](https://www.spongejet.com/store/) - [Sponge Media](https://www.spongejet.com/store/sponge-media.html) - [Portable Feed Units](https://www.spongejet.com/store/portable-feed-units.html) - [Integrated Systems](https://www.spongejet.com/store/integrated-systems.html) - [Portable Vacuum System](https://www.spongejet.com/store/portable-vaccum-system/cvr-p110.html/) - [Saber Nozzles](https://www.spongejet.com/store/saber-nozzles/saber-blast-nozzle.html/) - [Gorilla Nozzle Light](https://www.spongejet.com/store/gorilla-nozzle-light/gorilla-nozzle-lighttm.html/) - [SafeMan Systems](https://www.spongejet.com/store/safeman-systems/safeman-systemtm-a-safer-deadman.html) - [Internal Pipe & Tube Blasting – Robotica](https://www.spongejet.com/store/internal-pipe-tube-blasting-robotica/roboticatm.html) - [Accessories](https://www.spongejet.com/store/accessories.html) - [Portable Recyclers](https://www.spongejet.com/store/portable-recyclers.html) - [Industries & Applications](https://www.spongejet.com/applications-industries/) - Applications - [Buildings & Structures](https://www.spongejet.com/applications-industries/applications/buildings-structures/) - [Cleaning](https://www.spongejet.com/applications-industries/applications/cleaning/) - [Decontamination](https://www.spongejet.com/applications-industries/applications/decontamination/) - [Equipment & Machinery](https://www.spongejet.com/applications-industries/applications/equipment-machinery/) - [Flammable Atmospheres](https://www.spongejet.com/flammable-atmospheres/) - [Historic Preservation](https://www.spongejet.com/historic-preservation/) - [Marine Applications](https://www.spongejet.com/applications-industries/applications/marine-application/) - [Operating Equipment](https://www.spongejet.com/applications-industries/applications/operating-equipment/) - [Pipes & Pipelines](https://www.spongejet.com/applications-industries/applications/pipes-pipelines/) - [Structural Steel](https://www.spongejet.com/structural-steel/) - [Tanks](https://www.spongejet.com/tanks/) - Industries - [Abatement](https://www.spongejet.com/abatement/) - [Buildings & Infrastructure](https://www.spongejet.com/buildings-infrastructure/) - [Chemical & Petrochemical](https://www.spongejet.com/chemical-petrochemical/) - [Contractors & Coating Professionals](https://www.spongejet.com/applications-industries/industries/contractors-coating/) - [Facility Maintenance](https://www.spongejet.com/applications-industries/industries/facility-maintenance/) - [Manufacturing](https://www.spongejet.com/applications-industries/industries/manufacturing/) - [Marine](https://www.spongejet.com/applications-industries/industries/marine/) - [Military](https://www.spongejet.com/military/) - [Oil & Gas](https://www.spongejet.com/oil-gas/) - [Power](https://www.spongejet.com/applications-industries/industries/power/) - [Restoration](https://www.spongejet.com/restoration/) - [Transportation & Automotive](https://www.spongejet.com/applications-industries/industries/transportation/) - [Resources & Support](https://www.spongejet.com/support/resources-support/) - [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) [![spongejet](https://blog.spongejet.com/hs-fs/hubfs/Spongejet-Oct2015-Theme/Images/logo.png?width=211&height=49&name=logo.png "spongejet")](https://www.spongejet.com/) - [Contact](https://www.spongejet.com/contact/) - [Log In](https://www.spongejet.com/login) - [+1 603-610-7950](tel:+1-603-610-7950) - [How It Works](https://www.spongejet.com/how-it-works/) - [Videos](https://www.spongejet.com/video-gallery/) - [Why Sponge-Jet?](https://www.spongejet.com/why-sponge-jet/) - [Reliability Engineers](https://www.spongejet.com/why-sponge-jet/reliability-engineers/) - [Health, Safety and Industrial Hygienists](https://www.spongejet.com/why-sponge-jet/health-safety-industrial-hygienists/) - [Executives, Operations Managers](https://www.spongejet.com/why-sponge-jet/executives-operations-managers/) - [Corrosion & Maintenance Professionals](https://www.spongejet.com/why-sponge-jet/corrosion-maintenance-professionals/) - [Contractors & Service Professionals](https://www.spongejet.com/why-sponge-jet/contractors-service-professionals/) - [Construction & Project Managers](https://www.spongejet.com/why-sponge-jet/construction-project-managers/) - [Conservators & Historic Architects](https://www.spongejet.com/why-sponge-jet/conservators-historic-architects/) - [Products, Tools, and Media](https://www.spongejet.com/store/index.php/) - [Sponge Media](https://www.spongejet.com/store/index.php/sponge-media.html) - [Portable Feed Units](https://www.spongejet.com/store/index.php/portable-feed-units.html) - [Integrated Systems](https://www.spongejet.com/store/index.php/integrated-systems.html) - [Portable Vaccum System](https://www.spongejet.com/store/index.php/portable-vaccum-system/cvr-p110.html/) - [Saber Nozzles](https://www.spongejet.com/store/index.php/saber-nozzles/saber-blast-nozzle.html/) - [Gorilla Nozzle Light](https://www.spongejet.com/store/index.php/gorilla-nozzle-light/gorilla-nozzle-lighttm.html/) - [SafeMan Systems](https://www.spongejet.com/store/index.php/safeman-systems/safeman-systemtm-a-safer-deadman.html) - [Internal Pipe & Tube Blasting – Robotica](https://www.spongejet.com/store/index.php/internal-pipe-tube-blasting-robotica/roboticatm.html) - [Accessories](https://www.spongejet.com/store/index.php/accessories.html) - [Portable Recyclers](https://www.spongejet.com/store/index.php/portable-recyclers.html) - [Industries & Applications](https://www.spongejet.com/applications-industries/) - [Applications](https://www.spongejet.com/?page_id=2191) - [Buildings & Structures](https://www.spongejet.com/applications-industries/applications/buildings-structures/) - [Cleaning](https://www.spongejet.com/applications-industries/applications/cleaning/) - [Decontamination](https://www.spongejet.com/applications-industries/applications/decontamination/) - [Equipment & Machinery](https://www.spongejet.com/applications-industries/applications/equipment-machinery/) - [Flammable Atmospheres](https://www.spongejet.com/flammable-atmospheres/) - [Historic Preservation](https://www.spongejet.com/historic-preservation/) - [Marine Applications](https://www.spongejet.com/applications-industries/applications/marine-application/) - [Operating Equipment](https://www.spongejet.com/applications-industries/applications/operating-equipment/) - [Pipes & Pipelines](https://www.spongejet.com/applications-industries/applications/pipes-pipelines/) - [Structural Steel](https://www.spongejet.com/structural-steel/) - [Industries](https://www.spongejet.com/structural-steel/) - [Abatement](https://www.spongejet.com/abatement/) - [Buildings & Infrastructure](https://www.spongejet.com/buildings-infrastructure/) - [Chemical & Petrochemical](https://www.spongejet.com/chemical-petrochemical/) - [Contractors & Coating Professionals](https://www.spongejet.com/applications-industries/industries/contractors-coating/) - [Facility Maintenance](https://www.spongejet.com/applications-industries/industries/facility-maintenance/) - [Manufacturing](https://www.spongejet.com/applications-industries/industries/manufacturing/) - [Marine](https://www.spongejet.com/applications-industries/industries/marine/) - [Military](https://www.spongejet.com/military/) - [Oil & Gas](https://www.spongejet.com/oil-gas/) - [Power](https://www.spongejet.com/applications-industries/industries/power/) - [Restoration](https://www.spongejet.com/restoration/) - [Resources & Support](https://www.spongejet.com/support/resources-support/) - [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) ![blog-banner.png](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/blog-banner.png "blog-banner.png") # Blog ![Finished Longfellow Header.jpg](https://blog.spongejet.com/hs-fs/hubfs/Finished%20Longfellow%20Header.jpg?width=789&name=Finished%20Longfellow%20Header.jpg "Finished Longfellow Header.jpg") # How Boston's Longfellow Bridge Was Reborn 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. **Restoring Granite** Restoring Granite with Sponge-Jet is a straight forward process. Once an ideal finish is chosen by an architect or conservator, sponge blasting can be customized to meet the requirements through media and blast pressure selection. Micro-abrasives clean the surface without damaging the stone, removing staining, chlorides, and other contaminants. Airborne dust is limited at the point of generation, making a typically dusty process very manageable. Parts of the Longfellow Bridge were able to remain open throughout the restoration process. The Bridge was open to pedestrians and bicyclists with blasting taking place just meters below. 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.” - [Tweet](https://twitter.com/share) [Historic Restoration](https://blog.spongejet.com/topic/historic-restoration) [Cleaning](https://blog.spongejet.com/topic/cleaning) [Stone Restoration](https://blog.spongejet.com/topic/stone-restoration) [Granite](https://blog.spongejet.com/topic/granite) [Case Histories](https://blog.spongejet.com/topic/case-histories) Search this site on Google Search Google ### Categories - [Case Histories (41)](https://blog.spongejet.com/topic/case-histories) - [Historic Restoration (35)](https://blog.spongejet.com/topic/historic-restoration) - [Tech-Terminal (35)](https://blog.spongejet.com/topic/tech_terminal) - [Executive View (23)](https://blog.spongejet.com/topic/executive-view) - [Lead Abatement (22)](https://blog.spongejet.com/topic/lead-abatement) - [Application Station (21)](https://blog.spongejet.com/topic/application-station) - [Cleaning (18)](https://blog.spongejet.com/topic/cleaning) - [OSHA (12)](https://blog.spongejet.com/topic/osha) - [Safety First (12)](https://blog.spongejet.com/topic/safety-first) - [corrosion (12)](https://blog.spongejet.com/topic/corrosion) - [Stone Restoration (10)](https://blog.spongejet.com/topic/stone-restoration) - [Dustless Blasting (8)](https://blog.spongejet.com/topic/dustless-blasting) - [Fire Damage (7)](https://blog.spongejet.com/topic/fire-damage) - [Marine Industry (7)](https://blog.spongejet.com/topic/marine-industry) - [Robotica (7)](https://blog.spongejet.com/topic/robotica) - [Granite (5)](https://blog.spongejet.com/topic/granite) - [Coal Slag (4)](https://blog.spongejet.com/topic/coal-slag) - [Robotic Abrasive Blasting (2)](https://blog.spongejet.com/topic/robotic-abrasive-blasting) - [Railcar (1)](https://blog.spongejet.com/topic/railcar) see all ### Recent Posts ### Sign up for our blog. ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/find-rep-bg.png) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/find-rep-img.png) [Distributor Locator](https://www.spongejet.com/find-rep/) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/white-paper-bg.png) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/white-paper-img.png) [Resources](https://www.spongejet.com/support/resources-support/resource-library/?k=&type=document-library&document-type%5B%5D=24&searchsubmit=Search+resource) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/online-traing-bg.png) ![](https://blog.spongejet.com/hubfs/Spongejet-Oct2015-Theme/Images/online-traing-img.png) [Online Training](https://www.mytestcom.net/app/myTestcomURL.cfm?accountLogin=SpongeJet123&joinPasscode=SpongeJet123) [![spongejet](https://blog.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/)