The Stimson Bridge carries State Route 5 over the Little Ossipee River, connecting the towns of Waterboro and Limerick. This project included design of a new 168′ long two-span horizontally curved steel plate girder structure to replace the structurally deficient existing 3-span, 135′ long concrete tee-beam bridge. Replacement substructure units consist of a mass concrete center pier and integral H-pile abutments. Design considerations for the integral abutment structure included variable depths to bedrock between the abutments, a 5% roadway superelevation across the bridge, and the horizontal curvature of the bridge (centerline of roadway radius of approximately 1,000’). Shallow depth to bedrock at the Limerick abutment required over-coring of the bedrock sockets for those piles, effectively increasing the unbraced pile lengths to match those of the Waterboro abutment to create uniform pile stiffness and behavior between the two abutments. This project also included final design of improvements to approximately 500’ of approach roadway, including improvements to the adjacent Beaver Brook Road intersection. This project was completed for MaineDOT as an assignment under a Bridge Design General Consultant Agreement (GCA).
SERVICES
Study
Report Preparation
Load Rating Analysis
Contract Document Preparation
Specifications
Shop Drawing Review
Final Design
From the blog
Learn about ongoing projects and the innovative processes we employ for our clients.
For decades, airports have largely planned their fueling facilities around two familiar products: 100-octane low-lead aviation gasoline (100LL) for piston-engine aircraft and Jet A for turbine-powered aircraft. That landscape...
Christian Boisvert, PE, Hydraulic Engineer & Amateur Rugby Player What drew you to Hoyle Tanner? I really liked the size of the firm and the local office in Burlington,...
Infrastructure improvements continue at Clearbrook Condos, a 240-unit condominium community in Lincoln, NH, located across the river from Loon Mountain Ski Resort. What started as a conversation about aging...
We’re recognizing our November employee anniversaries and celebrating the 19 combined years these employees have spent growing, contributing, and making an impact at Hoyle Tanner.
In Fair Haven, Vermont, some sewer lines have served the community for nearly 120 years. Like many long-standing infrastructure systems, the collection system experiences a range of challenges. Aging...
Whether we're walking the dog, heading to work, taking our children to the bus stop, or enjoying New England's fall foliage, most of us are pedestrians at some point...
Demand for aircraft hangars is outpacing availability at many airports. According to the Aircraft Owners and Pilots Association (AOPA), 71 percent of airports across the country have reported a...
Stormwater is one thing people rarely think about until there is a problem. A flooded roadway, a washed-out culvert, standing water in a neighborhood, erosion along a streambank, or...
The Worcester-Elmore Route 12 Bundled Bridges Project has received the 2026 Northeastern Transportation and Wildlife Conference (NETWC) Innovation – Transformation Award. The recognition reflects an approach that treated bridge...
