Signs: plastic - neon - digital Crest advertising works directly with our customers to design, fabricate, install and maintain only the best outdoor signs that the industry has to offer. We are an authorized dealer of "watchfire" electronic message centers and offer complete sign maintenance and crane erection services. Please see some of our installed outdoor signs in the photo gallery. Billboards: full size boards - junior boards - with and without lights Our outdoor advertising program (with over 100 billboards) covers beaver county and lawrence county in pennsylvania and columbia county in ohio. Our billboard locations include interstate 376, the pennsylvania turnpike and the ohio turnpike. Please see our interactive maps and spreadsheets. Mobile sign rental: We now rent "watchfire" full color, digital mobile signs. Our mobile units have two large digital displays that can be programmed to highlight any special event that you may have. Call for pricing.