Filter Projects by:

Or Filter Projects by:

All Projects

Ameren Illinois Rivers transmission line river crossings
Interstate 74 – redesign services
South Florida Water Management District – headquarters building
Illinois Air National Guard facility design
Indianapolis International Airport services
Monroe County Airport
CapX2020 Mississippi River T-Line Crossing
Ameren Illinois Rivers Project
Indianapolis International Airport - Taxiway B rehabilitation
Midwest power-generation station projects
BNSF's Memphis Intermodal Facility expansion
DuPage National Technology Park Cyber Continuity Center
Macon County Beltway
Town Branch sewer rehabilitation
Missouri River Freight Assessment
P&L Railway Bridge design and construction
Muscatatuck Urban Training Center
Interstate 64 Missouri River Bridge - new bridge design
Springfield Airport Authority contract advisory services
Li Ka Shing Knowledge Institute
Lake County Judicial Center – commissioning services
Duke University – Levine Science Research Center
Charlotte County Airport design-build project
Caterpillar Inc. industrial projects
DHA BUILDER Asset Management System
BNSF Railway – Canadian River bridge design
Indiana Hoosier SAFE-T – Emergency Communications System
Fairfield and Gilmer Interchange Improvement
Illinois Tollway’s Cherry Valley interchange
Metropolitan St. Louis Sewer District – watershed mapping
USACE hydrographic surveys
Muscatine Joint Readiness Center
Tri-State Tollway reconstruction
University of Illinois at Springfield
SSM Health Good Samaritan Hospital
East Carolina University M&V audit
USF Juniper-Poplar Residence Hall
Abraham Lincoln Capital Airport - architectural design services
Sarasota Bradenton International Airport
Eastern Illinois University Renewable Energy Center
CWLP’s Dallman 4 – power-generating unit
BNSF bridge replacement over Des Moines River
City of New York – Emergency Radio Communications System
Kentucky Riverport Improvement
City of Rockford – Multilane Roundabout
U.S. Army Corps of Engineers - Roads Acting as Dams
Combined Service and Maintenance Support (CSMS) Bridging Documents
Clark Bridge - design services
FEMA Technical Assistance Contract
The Horace Mann Cos. retro-commissioning
South Suburban Airport – land acquisition services
Waukegan National Airport
Bowman Field
Liquefied natural gas tank projects
Sangamon County guaranteed energy savings contract
Chicago Region Environmental and Transportation Efficiency Program
International Broadcasting Bureau – Kuwait transmitting station
Capitol Avenue Corridor Improvements
Fort Hood Pavement Condition Surveys and Management Plan Updates
Monarch-Chesterfield Levee flood-wall design
F-16 Engine Centralized Intermediate Repair Facility (CIRF)
Indiana State Route 641 Bypass design
Broward College – student affairs complex renovations
Zora Neale Hurston Building retro-commissioning
Pompano Beach Air Park
Sustainability paves way for Runway 2-20
Blue Grass Airport
Springfield Clinic Sixth Street expansion
Union Pacific Railroad - Global III Facility planning & design
U.S. Coast Guard - LORAN-C high-power transmitter stations
Outdoor Advertising Control Support Services
CWLP Spaulding Dam Spillway Gate Rehabilitation
Military Special Forces Centric Training Center design
Shiloh Readiness Center
Interstate 255 rehabilitation
Torrey Pines Molecular Research Center – commissioning services
Rohde Building retro-commissioning
DeKalb Taylor Municipal Airport – instrument landing system
Fermi National Accelerator Laboratory projects
BNSF Railway – Renton, Wash., railroad bridges replacement
International broadcasting stations
AT&T Reno, Nev., central office expansion
Raney Street relocation and extension
Lockport Lock and Canal Wall
Palm Beach Atlantic University
USF – central energy plant commissioning
Seminole State College M&V Audit
Orange County Public Schools commissioning and retro-commissioning
Charlotte County Airport – general consultant services
Suffolk Construction Co.’s South Florida headquarters
Anacacho Wind Farm
Papalote Creek Wind Farm, Phases I and II
Alaska Railroad Corp.’s Northern Rail Extension
Interstate 57 interchange
Lock 22 extension feasibility study
Selfridge Munitions Facility
State of Florida Special Needs Shelters
Leesburg International Airport
Valkaria Airport improvements
USACE Alaska Railhead Facility
Centennial Bridge traffic study and rehabilitation
AASF and Readiness Center
Memorial Physician Services medical office
Southern Illinois University at Edwardsville
Turlington Building
North Carolina Central University – building commissioning
University of Florida East Campus Data Center
University of North Florida Biological Sciences Building
Arcadia Municipal Airport
Naples Municipal Airport
Simmons Cancer Institute
Florida Hospital Energy Roadmap Phase 1
Springfield Clinic 1st Expansion
Emiquon Preserve Water Control Structure
National Precast Concrete Association – plant quality assurance audits
Memorial Center for Learning and Innovation
Tennessee Waterways Assessment Study
Southeast Iowa Regional Economic and Port Authority
Hillside Town Center development
Sandy Grove Middle School

Alaska Railroad Corp.’s Northern Rail Extension

The Alaska Railroad Corp. (ARRC) selected Hanson Alaska LLC, a wholly owned subsidiary of Hanson Professional Services Inc., to provide engineering services for a proposed rail line extension from the south bank of the Chena Floodway near Eielson Air Force Base to Delta Junction, Alaska.

Major elements of the proposed extension project include:

  • approximately 80 miles of new railroad track to be constructed to Federal Railroad Administration Class 5 track standards, 
  • 14 bridges on the proposed action alignment, including a 3,300-foot-long bridge over the Tanana River, 
  • an access road for joint use by the military and ARRC maintenance personnel,
  • facilities for passengers, freight and maintenance operations at the terminus in Delta Junction and
  • ancillary railroad support facilities, including but not necessarily limited to power, wayside signals and communications towers and facilities.


The primary objectives of the project are to:

  • support commercial freight needs for communities and businesses, including the agricultural, mining and petrochemical sectors,
  • support passenger service needs and area tourism by providing a safe and reliable transportation alternative to the Richardson Highway and
  • provide improved access to the military training areas on the west side of the Tanana River.


In 2006 and 2007, Hanson evaluated several alignment alternatives to identify a proposed action alignment for the Surface Transportation Board to consider in an environmental impact statement. The proposed action alignment was refined and developed into a conceptual plan set in November 2007.

Hanson also conducted a conceptual design study to determine the preliminary configuration of three “standard” bridges defined as short spans (less than 40 feet), medium spans (60 to 80 feet) and long spans (more than 100 feet). These standard bridges will be used in evaluating the numerous proposed routes for the Northern Rail Extension, along with other considerations, to select a preferred route.

This report focused on the preliminary planning and conceptual configuration to be used throughout the route and to serve as the basis for opinion of probable construction costs for the majority of bridges. Compiling this report involved investigating numerous types of superstructure construction materials and researching typical local construction practices and climate restrictions, and Alaska-specific material availability.

In 2011, Hanson provided final engineering services for Phase 1 of the project, which consisted of a 3,300-foot-long crossing of the braided Tanana River, two smaller railroad bridges over Tanana River sloughs, and a mile of railroad embankment to connect the structures near Salcha, Alaska. This design addressed significant geotechnical, hydrologic, environmental and seismic issues. Hanson provided office engineering support to ARRC during construction of Phase 1.

The new bridge is designed to serve roadway and railroad traffic with a single bimodal deck. A ribbon-cutting ceremony for Alaska’s longest bridge — the Tanana River Bridge — was held Aug. 5, 2014.

Project Quick Facts


Alaska Railroad Corp.


Eielson AFB to Delta Junction, AK

Date Completed:


Areas of Emphasis:

Railway Wetlands & Environment

Services Provided:

Impact Assessments Planning Structural Engineering Transportation Engineering


2016 ASCE, Outstanding Civil Engineering Achievement Award of Merit

2016 Structural Engineers Association of Illinois, Best Project over $150 Million

2015 Alaska Engineering Societies, Grand Award

2015 ACEC, National Recognition Award

2015 ACEC Alaska, Honor Award

2014 Bentley Systems Inc., Finalist, International Bentley Systems Inc.Be Inspired Award, Innovation in Bridges Category

2014 Alaska Railroad Corp., Col. Frederick Mears Award of Excellence