| 1) | Transportation – Arch units arrive on flat-bed trucks ready for installation. |  |
| 2) | Arch Units – Bridge units are lifted off the truck, rotated and set on strip footings, a base slab, or a deep foundation system. |  |
| 3) | Foundation – Hardwood wedges lock the arch in place on the footing until the keyway is grouted. |  |
| 4) | Twin-Leaf Arches – Larger twin-leaf arches are joined by the patented BEBO crown joint. |  |
| 5) | Crown Joint – Twin-Leaf arches are temporarily joined by a tie rod and later made continuous by a closure pour. |  |
| 6) | Joint Seal – Arch units are grouted in the keyway and joints are scaled using a commercial joint wrap. |  |
| 7) | Wingwalls - Precast headwalls and wingwalls often facilitate an entire structure being set in one day. |  |
| 8) | Backfill – Concrete arch stiffness allows backfill to be placed and compacted quickly. |  |
| 9) | Finished Bridge – The finished bridge is quickly ready for traffic. Many aesthetic end treatment options are available. |  |