Determination of the Forces in X-Frames in Curved Girder Bridges

Implementation of the Negative Moment Reinforcing Detail Recommendations

Use of Cold Gas Dynamic Spraying for Repair of Steel Structures

Asset Management, Extreme Weather, and Proxy Indicators

Exploration of Ultrasound for the Evaluation and Preservation of Structures

Design and Detailing Requirements for Columns Under Collision

Assessing and Enhancing the Transportation Resilience for the State of Iowa

Beam End Repair for Prestressed Concrete Beams

Protocols for Concrete Bridge Deck Protections and Treatments

Evaluation, Laboratory Testing, Construction Documentation, and Field Testing/Monitoring of US 52 Overflow Bridge over Mississippi River

Next Generation Life-Cycle Cost Analysis Tool for Bridges in Iowa

Implementation of New Guidelines for Tightening Large Anchor Bolts of Support Structures for Signs and Luminaires

Accelerated Repair of Expansion Joints

Design and Performance Verification of a Bridge Column/Footing/Pile System for Accelerated Bridge Construction (ABC)

Role of Coarse Aggregate Porosity on Chloride Intrusion in HPC Bridge Decks

Risk-Based Bridge Management: A Methodology to Assess and Incorporate Risk in Decision-Making

Implementation of Structural Health Monitoring System

Field Investigation of Bridge Deck Reinforced with Glass Fiber Reinforced Polymer (GFRP) Rebar

Long Term Performance of Overlays: Thin Epoxy Overlay vs. Traditional Rigid Overlay

Development of a Structural Health Monitoring System to Evaluate Structural Capacity and Estimate Remaining Service Life for Bridges

Evaluation of the Performance of A1010 Bridge Steel

FHWA Unmanned Aerial System Tech Brief Development and Every Day Counts Round 5 Support

Connection Details and Field Implementation of UHPC Piles – Phase II

LRFD Minimum Flexural Reinforcement Requirements

Evaluation of Alternative Abutment Piling for Low-Volume Road Bridges

Investigation of Exterior Girder Rotation and the Effect of Skew during Deck Placement

Laboratory and Field Evaluation of an Alternative UHPC Mix and an Associated UHPC Bridge

Bidding and Contracting of ABC Projects: Case Studies and Consensus Building

Development of a Smart Timber Bridge–Phase III: Moisture and Strain Sensor Investigation for Historic Covered Bridges

Determination of U-Bolt Connection Load Capacities in Overhead Sign Support Structures

Construction of New Substructure Beneath Existing Bridges

Investigation into Shrinkage of High Performance Concrete Used for Iowa Bridge Decks and Overlays – Phase II Shrinkage Control and Field Investigation

Recommended Resistance Factors for Load and Resistance Factor Design of Drilled Shafts in Iowa

Management of Bridges Considering Aging Mechanisms and Extreme Events

Investigation and Evaluation of the Iowa Department of Transportation Bridge Deck Epoxy Injection Process

Laboratory and Field Evaluation of a Composite Glued-Laminated Girder to Deck Connection

Integral Abutment Details for ABC Projects, Phase II

Inspection and QA/QC for ABC Projects

Material Design and Structural Configuration of Link Slabs for ABC Applications

Assessing Bridge Characteristics for Use and Importance as Roosting Habitats for Bats

Validation Study for Detection and Quantification of Corrosion in Bridge Barrier Rails

Precast Concrete Bridge Barriers for Accelerated Bridge Construction

Development of Guidelines to Establish Effective and Efficient Timelines and Incentives for ABC

Integration of Structural Health Monitoring into Multilayer Statewide Bridge Maintenance and Management Practices

Initial Characterization of Geopolymer Based UHPC Material Properties

An Integrated Project to Enterprise-Level Decision Making Framework for Prioritization of Accelerated Bridge Construction

Re-tightening the Large Anchor Bolts of Support Structures for Signs and Luminaires: Phase I

Testing, Performance Evaluation, and Documentation of the Little Silver Creek Bridge: An Accelerated Innovation Deployment (AID) Project using Accelerated Bridge Construction

Evaluation of the Metal Fatigue Solutions Electrochemical Fatigue Sensor System

Development of Rural Road Bridge Weigh-in-Motion System to Assess Weight and Configuration of Farm-to-Market Vehicles

Big Data-­Driven Prediction of Long-Term Bridge Performance and Management Improvements

Development of a Rapid Assessment Tool for Pile Capacity and Stability in Response to Scour Situations

Use of Ultra-High-Performance Concrete for Bridge Deck Overlays

Investigation of MacroDefect-Free Concrete for ABC including Robotic Construction

Evaluation of the Buchanan County IBRD Bridge on Victor Avenue over Prairie Creek

Collection of Freeze-Thaw Performance Data on Vail Avenue

Study of the Impacts of Implements of Husbandry on Iowa Bridges

Buchanan County IBRD Bridge Project: Evaluation of a Folded Plate Girder Bridge System

Context-Sensitive Designs: Testing of Multi-Performance Level Box Beam Standards

Investigation of a Suitable Shear Friction Interface between UHPC and Normal Strength Concrete for Bridge Deck Applications

Strength, Durability, and Application of Grouted Couplers for Integral Abutments in Accelerated Bridge Construction

Economic Impact of Multi-Span, Prestressed Concrete Girder Bridges Designed as Simple Span versus Continuous Span

Bridge Design Effort and Cost Estimation Models – Phase I

Evaluation of Performance of Innovative Bridges in Wisconsin

Polymer Concrete Overlay Evaluation

Upgrading Bridge Rails on Low-Volume Roads in Iowa

Evaluation and Testing of a Lightweight Fine Aggregate Concrete Bridge Deck in Buchanan County, Iowa

Investigation of the Effect of Speed on the Dynamic Impact Factor for Bridges with Different Entrance Conditions

Investigation of the Impact of Dual-Lane Axle Spacing on Lateral Load Distribution

Investigation of Techniques for Accelerating the Construction of Bridge Deck Overlays

Investigation of the High-Strength Bolt-Tightening Verification Techniques

Laboratory Investigation of Bridge Strip Seal Joint Termination Details

MnDOT LRRB Next Generation Bridge Management Tools and Inspection

Terrestrial Laser Scanning-Based Bridge Structural Condition Assessment

MnDOT LRRB Development of Cost-Effective Timber Bridge Repair Techniques for Minnesota

Evaluation of the Need for Longitudinal Median Joints in Bridge Decks on Dual Structures

Investigation of Negative Moment Reinforcing in Bridge Decks

Laboratory Investigation of Grouted Coupler Connection Details for ABC Bridge Projects

Improving the Accuracy of Camber Predictions for Precast Prestensioned Concrete Beams

Seismic Performance of Connections that Facilitate Accelerated Bridge Construction

Implementation of a Pilot Continuous Monitoring System: Iowa Falls Arch Bridge

Iowa ABC Connections

Laboratory Investigation of Concrete Beam-End Treatments

Permeability Performance and Lateral Load for Granular Backfill behind Abutments

Evaluation of Air-Coupled Impact-Echo Test Method

Performance and Design of Bridge Approach Panels in Wisconsin

Development and Integration of Advanced Timber Bridge Inspection Techniques for NBIS

Investigation of Field Corrosion Performance and Bond/Development Length of Galvanized Reinforcing Steel

Rapid Replacement of Bridge Deck Expansion Joints Study – Phase I

Development of Preliminary Load and Resistance Factor Design of Drilled Shafts in Iowa

Methods for Removing Concrete Decks from Bridge Girders

Structural Characterization of UHPC Waffle Bridge Deck and Connections

Field Monitoring of Curved Girder Bridges with Integral Abutments

RFID Tags for Detecting Concrete Degradation in Bridge Decks

Bridge Damage Detection: Integration of Structural Health Monitoring System Concepts and Components – A Statewide Collaboration

Investigation into Shrinkage of High-Performance Concrete Used for Iowa Bridge Decks and Overlays

Pilot Project – Demonstration of Capabilities and Benefits of Bridge Load Rating through Physical Testing

Design Guide for Precast UHPC Waffle Deck Panel System, including Connections

Wind Loads on Dynamic Message Cabinets and Behavior of Supporting Trusses

Feasibility Study for Detection and Quantification of Corrosion in Bridge Barrier Rails

Laboratory and Field Testing of an Accelerated Bridge Construction Demonstration Bridge: US Highway 6 Bridge over Keg Creek

Field Evaluation of Methods to Minimize Transverse Glulam Deck Deflection Phase III

Timber Abutment Piling and Back Wall Rehabilitation and Repair

Development of a Bridge Safety Information System for the Saylorville Reservoir Bridge

Development of a Database for Drilled SHAft Foundation Testing (DSHAFT)

Development of LRFD Procedures for Bridge Pile Foundations in Iowa–Volume IV: Design Guide and Track Examples

Evaluation of Various Methods for Deflecting Debris from Bridge Piers

Wind Monitoring of the Saylorville and Red Rock Reservoir Bridges with Remote, Cellular-Based Notifications

Literature Review and Assessment of Nanotechnology for Sensing of Timber Transportation Structures

Development of LRFD Procedures for Bridge Pile Foundations in Iowa–Volume III: Recommended Resistance Factors with Consideration of Construction Control and Setup

Modified Sheet Pile Abutments for Low Volume Bridges (TR-568)

Evaluation of the Buena Vista IBRD Bridge: A Furthering of Accelerated Bridge Construction in Iowa

Field Testing and Evaluation of a Demonstration Timber Bridge

Seismic Performance of an I-Girder to Inverted-T Bent Cap Connection

Development of LRFD Design Procedures for Bridge Pile Foundations in Iowa–Volume II: Field Testing of Steel Piles in Clay, Sand, and Mixed Soils and Data Analysis

Preservation of Covered Bridges

Evaluation of a Bridge Constructed with Ultra High Performance Concrete

Implementation and Evaluation of Smart Timber Bridge Concepts to Provide Continuous Structural Condition Assessment

Development of LRFD Design Procedures for Bridge Pile Foundations in Iowa–Volume I: An Electronic Database for PIle LOad Tests (PILOT)

Instrumentation and Monitoring of Precast Bridge Approach Tied to an Integral Abutment in Bremer County

Testing and Long-Term Monitoring of 9th Street Bridge Over I-235 in Des Moines: Integral Abutments Supported on Steel Pile/Concrete Drilled Shaft in Glacial Clay

An Experimental Validation of a Statistical-Based Damage Detection Approach

Remote Monitoring of Historic Covered Timber Bridges in Madison County for the Prevention of Arson and Vandalism

Innovative Bridge Designs for Rapid Renewal

Bridge Rails and Approach Railing for Low-Volume Roads in Iowa (TR-592)

Laboratory and Field Testing and Evaluation of Precast Bridge Elements

Madison County Bridge Evaluation

Use of Ultra-High Performance Concrete in Geotechnical and Substructure Applications

Construction and Evaluation of a Prestressed Concrete Bridge Constructed Using Ultra High-Performance Concrete

Evaluation of a Bridge Constructed Using Accelerated Construction Practices

Evaluation of FRP Temporary Bypass Bridge

Instrumentation and Monitoring of Precast, Post-tensioned Bridge Approach Pavement

Analyze Wind-Loading Data Collected During Hurricane Katrina

Feasibility Investigation of Segmentally Precast Bridge Piers for Accelerated Construction

Development of Fatigue Design Procedures for Slender, Tapered Support Structures for Highway Signs, Luminaries, and Traffic Signals Subjected to Wind-Induced Excitation from Vortex Shedding and Buffeting

Field Evaluation of Timber Preservation Treatments for Iowa Highway Applications (IHRB-05-10)

Investigation of Steel Stringer Bridges: Superstructures and Substructures, Vol II (TR-522)

Field Testing of Railroad Flatcar Bridges (TR-498)

Development of an Improved integral Abutment-to-Approach Slab Connection

Evaluation of a Timber Bridge for the Secondary Road System Using FRP Reinforced Glulam Girders

Evaluation of a Prestressed Concrete Bridge Constructed using Ultra High-Performance Concrete

Evaluation of a Single-Span Steel-Girder Bridge Using a Steel-Free Deck System in Tama County

Evaluation of a Bridge Constructed Using High-Peformance Steel

Evaluation of Corrosion Resistant Steel Reinforcing in the Deck Slab of a Three Span Prestressed Girder Bridge

Performance Evaluation of Steel Bridges, Phase II (TR-493)

Evaluation of a Three-Span, Prestressed Concrete Girder Bridge Constructed with FRP Components

Monitoring Wind-Induced Vibrations/Stresses in a High Mast Lighting Tower

Enhancement of Wisconsin DOT NDE Capabilities

Evaluation of a Steel Girder Bridge Strengthened Using Fiber Reinforced Polymer Plates

Identification of the Best Practices for the Design, Construction, and Repair of Bridge Approach Sections

Development of Acceptable Live Load Deflection Criteria for Various Timber Superstructure and Deck Types

Evaluation of the Effectiveness of Glued Laminated Helper Stringers

Impacts of Overweight Implements of Husbandry on Minnesota Roads and Bridges

Health Monitoring of Bridge Structures and Components Using Smart-Structure Technology

Effective Structural Concrete Repair

Monitoring and Evaluation of the Westbound Roadway of the Iowa River Bridge

Investigation of the Modified Beam-in-Slab Bridge System

Evaluation of a Post-tension Strengthened Steel Girder Bridge Using FRP Rods/Strands

Development of Abutment Design Standards for Local Bridge Designs

Maintenance, Repair, and Rehabilitation of Low Volume Road Bridges

Demonstration Project Using Railroad Flat Cars for Low Volume Road Bridges

Development of Bridge Load Testing for Load Evaluation (TR-445)

Retrofit Methods of Distortion Cracking Problems in Plate Girder Bridges

NCHRP Project 20-5, Topic 32-08 “Cost Effective Structures for Off-System Bridges”

Alternative Solutions to Meet the Service Needs of Low Volume Bridges in Iowa (TR-452)

Development of Modeling Preprocessors and Postprocessors for Evaluation of Timber Bridges

Field and Laboratory Evaluation of Precast Concrete Bridges

Performance of Strip Seals in Iowa Bridges, Pilot Study

Feasibility of Using Railroad Flat Cars for Low Volume Road Bridges

Preventing Cracking at Diaphragm/Plate Girder Connections in Steel Bridges (TR-393)

Field Testing and Evaluation of Three Rehabilitated Timber Railroad Bridges

Dynamic Performance of Timber Bridges

Research Needs Study for Wood Transportation Structures

Development of Design Criteria for Longitudinal Glued Laminated Timber Deck Bridges

Behavior of Longitudinal Glued Laminated Timber Deck Bridges