Model railroaders, this Walthers SceneMaster girder bridge is exactly what your HO scale layout needs for that authentic railroad look! Based on one of the most common bridge designs used across North America, this 90-foot single-track through girder bridge adds incredible realism to your scenes. The plastic kit builds up beautifully with crisp details that capture the industrial feel of real railroad bridges. You can build it with either an open deck or ballasted deck depending on your preference, and the included optional center girder lets you convert it to double-track if you combine kits later. The dark gray molded color looks realistic right out of the box, though it takes paint beautifully if you want to customize it. These bridges were typically used for extra clearance over highways, waterways, and multiple-track lines, so they're perfect for creating those elevated sections that make layouts more dynamic. The finished model measures about 12.12 x 2.38 x 1.12 inches - a substantial size that makes a visual impact. You can use multiple spans together with center piers (sold separately) for longer crossings, creating that classic multi-span bridge appearance. It's compatible with Walthers code 83 bridge track too. The engineering is typical Walthers quality - parts fit together well, and the assembly process is satisfying without being frustrating. Whether you're building a new layout or upgrading an existing one, this bridge adds that professional touch that makes your model railroad look like the real thing. It's one of those cornerstone pieces that becomes a focal point of your entire layout.