Sunrise Fire Emergency Bridge Load Ratings
During the devastating 2017 fire season, DJ&A received an emergency request from the Forest Service to calculate bridge load ratings on two bridges within the Lolo National Forest in Montana. The Forest Service needed to verify that the bridges could remain structurally sound if used to support to firefighting operations…
Tongass National Forest Bridge Inspections and Load Ratings
The Tongass National Forest is the largest National Forest in the U.S., spanning almost all of Southeast Alaska from the southern top of Prince of Wales Island to the Malaspina Glacier 500 miles north. DJ&A was tasked with investigating and evaluating the conditions of and performing load ratings for 390…
Region 8 Bridge Load Ratings
Over the past three years, DJ&A has worked with Region 8 to complete 151 load ratings in the Kisatchie, Ouachita, and Ozark-St. Francis National Forests. For each load rating, DJ&A sent a team of engineers to the site to evaluate the bridge condition for issues that could affect the load…
Pulaski Tunnel Trail
The Pulaski Tunnel Trail guides visitors through the route taken by former U.S. Forest Service firefighter Edward Pulaski to lead his crew to safety in an abandoned mining tunnel after they were caught in the historic wildfires of 1910. Ed’s heroic actions were honored by the Forest Service with the…
Jordan Creek Bridge Rehabilitation
DJ&A provided surveying and engineering services for the rehabilitation of a 120-foot steel bridge in Idaho. DJ&A completed an inspection of the existing steel truss, timber approach spans and concrete substructure then performed a load rating of all of the spans to determine the value in rehabilitating the structure. Although…
Gifford Pinchot National Forest Bridge Designs
DJ&A was hired by Western Federal Lands Highway Division and the U.S. Forest Service (USFS) to design eight steel-girder bridges for a fast-track project. All survey, design, and contract preparation were completed within four months and all bridge construction within 12 months using innovative strategies and concepts from Accelerated Bridge…
Emerson Creek AOP & Stream Restoration
DJ&A was tasked completing the restoration of approximately 500 linear feet of Emerson Creek and the road decommissioning of approximately one mile of low volume road near Tiller, Oregon on the Umpqua National Forest. A priority of this project was to remove an existing culvert and restore Emerson Creek, which…
Elk River Bridge Design
The town of Elk River, Idaho is steeped in the history of the Nez Perce people and the gold mining that made the region popular in the 1800’s. There are still narrow paths available to walk and drive along through Elk River that showcases the historic paths that miners took…