Filter Projects by:

Or Filter Projects by:

All Projects

Interstate 74 – redesign services
South Florida Water Management District – headquarters building
Illinois Air National Guard – composite support facility design
Indianapolis International Airport - runway & taxiway rehabilitation
Midwest power-generation station projects
BNSF Railway’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
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
BNSF Railway – Canadian River bridge design
Indiana Hoosier SAFE-T – Emergency Communications System
Fairfield and Gilmer Interchange Improvement
Metropolitan St. Louis Sewer District – watershed mapping
Illinois Tollway’s Cherry Valley interchange
USACE hydrographic surveys
Muscatine Joint Readiness Center
Tri-State Tollway (I-294) reconstruction
University of Illinois at Springfield
USF Juniper-Poplar Residence Hall
Abraham Lincoln Capital Airport - architectural design services
Sarasota Bradenton International Airport
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
South Suburban Airport – land acquisition services
Liquefied natural gas tank projects
Chicago Region Environmental and Transportation Efficiency Program
International Broadcasting Bureau – Kuwait transmitting station
Capitol Avenue Corridor Improvements
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
Pompano Beach Air Park
Sustainability paves way for Runway 2-20
Springfield Clinic Sixth Street expansion
Union Pacific Railroad - Global III Facility planning & design
U.S. Coast Guard - LORAN-C high-power transmitter stations
CWLP Spaulding Dam Spillway Gate Rehabilitation
Outdoor Advertising Control Support Services
Military Special Forces Centric Training Center design
Shiloh Readiness Center
Interstate 255 rehabilitation
Torrey Pines Molecular Research Center – commissioning services
DeKalb Taylor Municipal Airport – instrument landing system
Fermi National Accelerator Laboratory projects
BNSF Railway – Renton, Wash., railroad bridges replacement
International Broadcasting Bureau – A/E services worldwide
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
Charlotte County Airport – general consultant services
Suffolk Construction Co.’s South Florida headquarters
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
Southern Illinois University at Edwardsville
Turlington Building
North Carolina Central University – building commissioning
Arcadia Municipal Airport
Naples Municipal Airport
National Precast Concrete Association – plant quality assurance audits
Tennessee Waterways Assessment Study
Southeast Iowa Regional Economic and Port Authority
Hillside Town Center development
Sandy Grove Middle School
PROJECT GALLERY

BNSF bridge replacement over Des Moines River

Hanson and a joint-venture partner provided BNSF Railway Co. with design services for the replacement of a bridge over the Des Moines River near Ottumwa, Iowa.

The existing bridge consists of five 140-foot, double-track truss spans with multiple 60-foot deck beam approach spans at each end. Three of the trusses spanned the Des Moines River with the other two spanning the westerly flood plain.

In phase one of this project, the Hanson team replaced the two 140-foot trusses over the flood plain with four 70-foot deck beam spans, adding a new pier support between the existing piers to reduce the span lengths. The new piers consisted of 10-foot-diameter drilled shafts installed on either side of the existing trusses. The piers were connected by a 10-foot-by-10-foot, cast-in-place concrete transfer beam.

Phase two of this project involved performing a value engineering analysis of the options for replacing the remaining three truss spans over the river. Analysis showed that the option of three new piers with two new 190-foot trusses and a 70-foot beam span would provide for a longer structure life, and it would improve the waterway opening of the Des Moines River when compared with reuse of the existing piers and construction of a new superstructure. During phase two, Hanson provided the design and prepared plans for these structures.

Some of the challenges associated with this project included maintaining track operations and using a ballasted deck bridge while maintaining existing low-steel elevations. Superstructure installation was performed during brief track shutdown periods of 24 hours for phase one and 36 hours for phase two.

During this project, Hanson also provided geotechnical analysis and foundation recommendations, bidding and construction assistance, and shop drawing review. Additionally, Hanson conducted the hydraulic and environmental studies, including wetlands, to get construction permitting from the U.S. Army Corps of Engineers.

The bridge was determined to have historic significance and was eligible for inclusion in the National Register of Historic Places — requiring a report and permitting from the Iowa State Historic Preservation Office.

In 2001, the other three 140-foot trusses and one 60-foot approach span were replaced with two new 190-foot trusses and a 70-foot deck beam span. This approach allowed the railroad to remove two large, deteriorated masonry piers from the river channel and replace them with only one new pier. This also reduced the restrictions in the channel and allowed for better water conveyance.

During construction, our team prepared construction cost estimates, coordinated with owner and contractor construction personnel, and performed shop-drawing review.

Project Quick Facts

Client:

BNSF Railway Co.

Location:

Ottumwa, IA

Date Completed:

2002

Areas of Emphasis:

Railway Wetlands & Environment

Services Provided:

Impact Assessments Permitting Geotechnical Engineering Construction Project Management Structural Engineering Water Resources Engineering