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Pool-Funded Projects
Pooled-fund studies enable the New Hampshire DOT to leverage its research funding by partnering with other States and FHWA to address common research needs. New Hampshire is a contributing partner on a number of pooled-fund projects. more …

NHDOT Research
Select a category below (newest projects are listed first in each category)

Research Projects - Aeronautics
Poster Available Online Report Available
Reducing Bird Strike Risk at Portsmouth International Airport through Research on Breeding Upland Sandpiper Habitat
Instrument Landing System (ILS) Feasibility Study for Mt. Washington Regional Airport
Hampton Airfield Preservation Study
Research Projects - Bridges
Estimation of Flood Discharges at Selected Recurrence Intervals for Streams in New Hampshire
In-Service Performance Monitoring of a CFRP Reinforced HPC Bridge Deck in Rollinsford, NH
Performance of Precast Deck Panels
Concrete Cover Determination using Ground Penetrating Radar (GPR)
Ground Penetrating Radar (GPR) for Delineating Bridge Deck Repair Areas
Ground Penetrating Radar (GPR) to Detect Pre- and Post-Flood Scour in NH
Pier-Scour Measurement Methods and Predictions at New Hampshire Bridge Sites
Fiber Reinforced Polymer (FRP) Demonstration Project and Bridge Deck Test Facility
Bridge Deck Evaluations using High Speed Ground Penetrating Radar (GPR)
Research Projects - Construction
Ground Vibrations Emanating From Construction Equipment
Infrared Joint Heating to Reduce Cracking of Longitudinal Joints in Asphalt Pavements
Research Projects - Environment
Development and Implementation of an Interactive Stormwater Table
Biological Control of Purple Loosestrife
Evaluation of "Critter Crossings"
Research Projects - Geotechnical
Barron Mountain Rock Reinforcement Evaluation
Development of a Geotechnical GIS for Subsurface Characterization with 3D Modeling Capabilities
Effectiveness of a Pile Driving Analyzer (PDA) for Determining Pile Capacity in NH Soils
Enhancing Geotechnical Information with Ground Penetrating Radar (GPR)
GIS and the New Hampshire Rock Cut Management System
Resistivity and Seismic Refraction Methods for Geotechnical Subsurface Investigations
Research Projects - Maintenance
Alternate Paint Systems for Overcoating
Evaluation of Alternative Deicing Chemicals vs. Straight Sodium Chloride
Evaluation of an Automated Bridge Anti-Icing System
New Hampshire Road Weather Information System (RWIS)
Use of RAP Millings to Improve the Structural Characteristics and Reduce Frost Heaving of Low-Volume Roads
Research Projects - Materials
Alternate Approach Slab Reinforcement
Application of the Bailey Method to NH Asphalt Mixtures
Asphalt Content Determination by Ignition Ovens
Durability Of Truncated Dome Systems (aka Detectable Warnings On Walking Surfaces)
Durability of Weathering Steel Guardrail
Effect of Freeze-Thaw and Frost Heaving on Flowable Fill
Evaluation of the Bond Between Barrier Membrane and Concrete Bridge Decks
Mitigation of Alkali-Silica Reactivity (ASR) in New Concrete in New Hampshire
New Hampshire's Concrete Aggregate and Alkali-Silica Reactivity - Statewide Assessment of Fine and Coarse Concrete Aggregate
Shrinkage Characteristics of Concretes with Type K Cement, Mineral and Chemical Additives
Frost Susceptibility of Recycled Crushed Glass - Aggregate Mixtures
Research Projects - Pavements
Preparation of Rumble Strips Prior to Overlay
Winter Tenting of (HMA) Highway Pavements
Performance-Related HMA Aggregate Tests (Synthesis)
Resilient Modulus for NH Subgrade Soils/Mechanistic AASHTO Design
Layer Coefficients for NHDOT Pavement Materials
Correlation Between Measured Ride Quality and Mean Panel Ratings
Research Projects - Traffic
PMMA Retro-Reflective Beads for Traffic Paint
Waterborne Traffic Paints - A Study for the Potential Improvement in Drying Time and Cost-Effectiveness
Crashworthiness of Thin-Walled Aluminum and Steel U-Channel Sign Posts
Research Projects - Transit
Improved Communication w/Multiple Transportation Providers for Elderly/Disabled Riders