Hoyle Tanner provided load rating services of the New Hampshire approach spans for the Interstate 95 High Level Bridge over the Piscataqua River between Portsmouth, New Hampshire and Kittery, Maine. The New Hampshire approach has 19 spans ranging in length from 71’-8” to 112’-0” and has an overall length of 1810’-0”. Girders constructed on chorded segments created the horizontal curvature of the approach spans between tangent sections located at each end. Hinges consisting of a pin and link system are located within spans 5S, 9S, 14S and 16S. Only the exterior girders are continuous from the South Abutment to the South Anchor Pier. The interior girders are discontinuous with the number of girder lines being reduced at hinge locations. Since the overall bridge width and number of girder lines vary, the girder spacing varies along the length of the bridge. Analysis and load rating was performed using the MDX and MIDAS computer programs.
SERVICES
Condition Assessment
Load Rating Analysis
Subconsultant Coordination
From the blog
Learn about ongoing projects and the innovative processes we employ for our clients.
What drew you to Hoyle Tanner? I met Steph and Maggie at a networking event at my school where I had a really good conversation with them. I learned...
We’re proud to announce that David Jeffery and Tyler Heinrich have earned their Licensed Surveyor in Training (SIT) status in New Hampshire! David and Tyler are the newest additions...
BIM’s Importance Building Information Modeling (BIM) is a significant advancement in modern design and construction, and Hoyle Tanner is a leader in this design for wastewater facilities in New...
We are excited to announce that Structural Engineer Katie Welch has been appointed Director at Large for the Structural Engineers of New Hampshire (SENH) Board of Directors. The SENH...
At Hoyle Tanner, we have been deeply involved in the planning and design phases of the Millinocket Municipal Airport project. This project is a significant part of the town's...
Project Overview Hoyle Tanner is providing environmental engineering design and construction services for the Brighton Wastewater Treatment Facility (WWTF) upgrade. The Brighton WWTF operates a small lagoon system with...
Our team has been hard at work load rating bridges across Massachusetts. In simple terms, a load rating is an evaluation of a bridge to determine its capacity to...
What drew you to Hoyle Tanner? When I first started looking for an internship, I honestly had no idea what I was looking for. I applied to the Construction...
One of the most important, challenging, and rewarding aspects of the civil engineering curriculum at a college or university is the senior capstone project, or senior project. A “culminating...