168th Street Widening over Lake Zorinsky, Omaha, NE
Preliminary Design, type/size/location, and data sheet development for phased construction of a new three span replacement bridge.
N-11 over UPRR and US-30, Hall County, NE
Preliminary design, type/size/location, and data sheet development for a new three span viaduct and a three span pedestrian bridge in Wood River, NE. The viaduct and pedestrian bridges will both span over US-30 and Union Pacific Railroad tracks, replacing at-grade crossings. The 430’ long viaduct will utilize alternate steel and concrete superstructure designs with MSE wall wrapped abutments. The concrete alternate will use a NU2000 I girder section while the steel alternate will use a 5’-9” high performance plate girder section. The 450’ long pedestrian bridge will consist of single span prefabricated steel truss sections supported by cast-in-place concrete piers.
Wenninghoff Road, Omaha, NE
Performed structural design for a replacement culvert under Crown Point Avenue. Down stream from the culvert, an existing flume/drop structure (complex geometry) was also replaced. Construction drawings and specifications were provided for both structures. Construction phase services were also provided.
Antelope Valley East Leg Bridge, Lincoln, NE
This project consisted of developing functional/preliminary design, plan and cost estimates for a concrete girder superstructure alternative for the Antelope Valley East Leg Bridge in Lincoln, NE. The bridge is 1090 feet long, 5-spans, and on curvalinear alignment with a 1000 foot radius reverse curve. The original bridge design used curved steel plate girders. The concrete girder alternative was evaluated for constructability and cost effectiveness. Preliminary design and findings were submitted in a report along with bridge Type, Size and Location (TS&L) plans.
Value Engineering - 96th Street Over West Papio Creek, Sarpy County, NE
The original three span configuration was a IT900 bridge with an 81’-100’-81’ continuous span arrangement. Due to the introduction of the NU900 and an updated FEMA flood map, the bridge superstructure was changed to a NU900 and raised to meet the revised low water elevation. Changing the superstructure saved money by significantly reducing the number of prestressed concrete girders. The NU900’s utilized the threaded rod continuity connection in order to create superstructure continuity before placement of the cast-in-place deck.
Value Engineering – I-80 over Platte River, Cass & Sarpy County, NE
This 10-span, 1644' long twin structure bridge replaces an existing structure. The eastbound piers are to be constructed in the gap between the existing twin structure bridge, but partial demolition of the existing bridge would be required. Hawkins Construction Company proposed an alternate design of the eastbound piers that would allow them to be almost completely constructed prior to any demolition. The resulting design reduced the disruption to interstate traffic and saved several weeks in construction time.
Cass Street Bridge at 78th Street, Omaha, NE
Project included design of new 3-span superstructure, including addition of grade beam supported approach slabs. Rolled steel beams were selected for cost effectiveness and rapid construction. The bridge sidewalks were widened to meet current standards. The existing abutments and piers were modified to accommodate the new superstructure. The project required two phases of construction. Other tasks included preparation of traffic control sheets and civil related construction and removal sheets. Organized public information meetings and utility coordination meetings. Provided construction phase services.
MidTown Study, Omaha, NE
Study investigated several alternatives for reconstruction of Dodge St. from 70th Street to I-480. The alternatives studied included 5-lane, 6-lane, and 8-lane configurations for which we provided the concepts for the Memorial Park pedestrian bridge over Dodge St. and the Dodge St. bridge over Saddle Creek. The Saddle creek interchange was studied for tight diamond and single-point configurations.
Value Engineering - Arbor Road over I-80, Lancaster County, NE
This 2 span (142’/136’) bridge is a horizontally curved. The original design used high strength steel plate I-girders with a cast-in-place deck slab. Value engineering resulted in curved post-tensioned concrete U-girders and full-depth precast deck panels. It presents the first implementation of a curved precast concrete girder bridge in Nebraska and one of the very few in the United States. This bridge used high strength concrete and post-tensioned strands only. This project has received local and regional awards.
* * 2006 PCI Design Award Winner * *
* * 2006 ACI Nebraska Chapter Awards of Excellence Winner * *
Constructability Review, Bob Boozer Drive, Omaha, NE
Performed a constructability review of a single span precast concrete arch bridge over a West Papio Creek tributary. The arch would replace a single span rolled steel beam bridge and would be constructed to accommodate future widening of Bob Boozer Dr. After let for construction, to facilitate construction, incorporated standard NDOR bridge detailing approach on several features.
Platte River East, Saunders and Douglas Counties, NE
The project includes preliminary and final bridge designs for two bridges on Highway 92 over the Platte River near Yutan, NE. Bridge No. 1 is 970 ft. in length and Bridge No. 2 is 592 ft. in length. Each bridge includes a concrete and steel alternate. Span lengths were extended in order to eliminate one pier. The final design contract required InfraStructure to submit final plans on the four bridges (two structures, concrete and steel) within 6 months of notice to proceed.
Pacific Street Bridge – Bob Boozer to 169th, Omaha, NE
Rehabilitate/Widened the existing three span 174’-0” long by 85’-4” wide bridge on Pacific Street over the West Branch Papillion Creek. The project involved widening the existing structure from 47’-6” to 85’-4”. The project is unique in that the existing expansion abutments were made integral to reduce future maintenance costs associated with replacing the degrading bearings and end deck joints. The bridge was widened on both sides and phased construction techniques were used so that traffic could remain on the bridge during construction. Also performed construction phase services including shop drawing review, shim calculations, and construction consultation.
Raynor Parkway Bridge, Bellevue, NE
Preliminary and final bridge design of the 248’-0” long by 60’-8” wide three span bridge over the West Branch Papillion Creek. The structure was designed using fixed supports at the bents and expansion supports at the abutments. The bridge consists of NU 900 precast/prestressed concrete girders with centerline beam spacing of 10’-6”. Engineering consultation and on-site bridge construction observation was also performed to insure compliance with contract design documents.
Value Engineering – 108th Street over BNSF Railroad, Sarpy County, NE
Redesigned the three span (15 m – 28.7 m – 15 m) precast/prestressed concrete NU 1100 I-Girder superstructure eliminating four girder lines – 12 girders total. By eliminating girders lines, the number of required bearings at the pier was reduced. And the abutment bearings were completely eliminated by incorporating an integral type abutment. The intermediate diaphragms were also eliminated. In addition to an initial cost savings of over $120,000, future maintenance costs are expected to be reduced as a result of eliminating the bearings and diaphragms.
Value Engineering - Jct. US-30/N-92 (Clarks Viaduct), Merrick County, NE
Replaced the original 527’-6” long, 4-span haunched steel plate girder superstructure design with the first high performance concrete superstructure designed in the United States using non-post-tensioned continuity for deck weight. The value-engineered system incorporated a 100’-151’-148’-127.5’ continuous span arrangement using modified NU-1100 mm I-girders, approximately 20’ long cast-in-place haunched pier segments, and a special threaded rod “continuity connection.” The immediate construction cost savings to the State of Nebraska was approximately $100,000. This project has received local and regional awards.
* * 2004 PCI Design Award Winner * *
96th Street Extension - Giles Road to Hwy 370, Sarpy County, NE
Preliminary and final design for three brides. The structures included a three span, 262’-0” Inverted Tee (IT) 900 mm bridge and two single span, 69’-0” IT 700 mm bridges. The three span IT900 bridge utilized spans of 81’-100’-81’ in a continuous span arrangement - resulting in one of the longest span IT bridges in the State of Nebraska. One of the single span bridges incorporated complex horizontal and vertical geometrics. Also performed construction phase services including shop drawing review, shim calculations, and construction consultation.
Eagletail Creek Bridge Replacement, Wallace County, KS
Work included the development of preliminary and final design and plans for a 56.6 m long by 12.2 m wide 3-span Inverted Tee (IT) beam bridge. The bridge also features a 1.5 m wide sidewalk. The bridge will be constructed in two stages and incorporates a threaded rebar system to connect the two bridge sections.
Seven-Mile Creek Bridge Replacement, Lansing, KS
Preliminary and final design and plans for a 30.0 m long by 21.5 m wide single span concrete girder bridge. Also featured are two 3.0 m wide combined sidewalk/bike trails. The bridge also has a 1.4 m wide concrete median that provides for a left-hand turn lane on the bridge. The bridge will be constructed is two stages and incorporates a threaded rebar system to connect the two bridge sections. The specific challenge in converting this structure to a single span from the original 3-span structure was satisfying the hydraulic freeboard requirement.
Adams Street Viaduct, Lexington, NE
Specialty bridge design sub-consultant for final design of a 675’-4” five span bridge over five Union Pacific Railroad tracks and U.S. Hwy. 30. The structure was designed with fixed supports. Expansion joints were removed to eliminate future maintenance issues. Structure consisted of four three column piers, integral abutments and 4-lines of NU 1800 concrete girders with a girder spacing of 12’-0”. A 44’-4” cross section allows for a sidewalk in addition to the 32’-0” clear roadway. The bridge is on a 15 degree skew.
198th & Skyline, Douglas County, NE
System optimization and design check for this 63 m single span bridge structure. The original design incorporated three temporary, 2050 mm deep girder segments, post-tensioned prior to deck placement to ultimately span the 63 m. The girders require a concrete strength of 51 MPa at release and 69 MPa at final. The system was optimized to eliminate 50 mm of girder depth such that the standard NU 2000 girder section could be utilized. In order to eliminate the 50 mm, the LRFD vertical shear capacity provisions were incorporated. Also, strain compatibility approach was used for flexural capacity calculations.
* * 2005 PCI Design Award Winner * *
Value Engineering - Wahoo South, Saunders County, NE
Redesign the substructure on a 1,770 foot long precast/prestressed concrete NU2000 girder bridge. The original substructure consisted of 11 piers, with each pier having six cast-in-place columns supported on a pile cap and precast/prestressed concrete displacement piling. There were a total of 642 concrete displacement piles. Due to the high water level and the cost associated with de-watering, the contractor approached IS about replacing the concrete piling with drilled caissons. InfraStructure not only redesigned the foundation elements from concrete piling to drilled caissons, but also removed two of the six columns on each pier. The savings realized by the State of Nebraska for this portion of the project alone was estimated at over $800,000. IS also revised the super-to-substructure support methodology resulting in the elimination of a majority of the bearings on the project.
Value Engineering - Platte River to N-31, Sarpy County, NE
Replacing a three span cast-in-place haunched slab superstructure with an Inverted Tee (IT) 300 mm precast/prestressed concrete girder superstructure. The project resulted in cost savings, returned to NDOR, as a result of the elimination of extensive temporary falsework and also due to the increased speed of construction of the IT 300 superstructure system.
Papillion West, Sarpy County, NE
Final design of a 50.6 m three-span bridge over the South Papillion Creek. The 150 mm composite deck and prestressed Inverted Tee girder (IT500) superstructure provides for a 2.8 m sidewalk in addition to the 9.1 m clear roadway. The concrete encased pile bents and sheet pile wall type abutments are on a 30 degree skew.
Dahlman Avenue Bridge at “B” Street, Omaha, NE
Inverted Tee (IT) superstructure type selection and final design support for a 57.72 m long, three span replacement structure over a Union Pacific Railroad corridor in an urban setting. A 10.925 m cross section allows for a sidewalk in addition to the 8.4 m clear roadway. The bridge is on a 13.5 degree skew.
Ogallala South, Keith County, NE
Alternate prestressed post-tensioned concrete girder (NU 1350) superstructure design for 79.6 m long, 9.5 degree skew, two span replacement bridge crossing over Interstate 80. The 24.3 m wide CIP reinforced concrete deck includes a sidewalk and a raised median and incorporates phased construction.
Pawnee City West, Pawnee County, NE
Final design of two, conventional, replacement, three-span stream crossings with 10.8 m clear roadway widths. The superstructures are supported on concrete encased pile bents and sheet pile wall type abutments. The first bridge is a 41.8 m long concrete slab bridge on tangent alignment. The second bridge is a 63.63 m long prestressed concrete girder (NU1100) bridge on an 18 degree skew.
Bennington Lake (Newport Landing), Bennington, NE
Final design of two 105 ft. single-span, prestressed concrete girder (NU1100) bridges over Bennington Lake. Precast concrete panels were utilized to provide a stone arch appearance.
Pacific Street Widening, Omaha, NE
Final design support relating to improvements and widening of existing Pacific Street Bridge on 70th street. Lamp, Rynearson & Associates, Inc. (LRA) was responsible for final design.
Pine Street Bridge, Omaha, NE
Lamp, Rynearson & Associates, Inc. (LRA) was responsible for final design of this structure. InfraStructure provided final design support to LRA.
U.S. Highway 30/67 Bridge Replacement, Clinton County, IA
Inverted Tee superstructure system selection and final design support for two, replacement, three-span crossings with 22.8 m clear roadway widths. The bridge over Mill Creek is a 49.4 m long stream crossing on a tangent alignment. The railroad overpass is a 50.9 m long, 7.5 degree skew structure over a Union Pacific Railroad industrial spur.
Marine Parkway Bridge, New York, NY
Conceptual development and preliminary design of an alternate precast/prestressed deck panel system for deck replacement on two 1,061 foot approach deck trusses. Phased deck replacement and widening.
Hickory Street Bridge, Fon Du Lac County, WI
Alternate prestressed post-tensioned 1370 mm deep concrete girder superstructure design for a 74.4 m long, 40 degree skew, two span replacement bridge crossing over US Hwy 41. The 25.1 m wide CIP reinforced concrete deck includes sidewalks and a raised median. Phased construction.
Giles Road Bridge, Sarpy County, NE
This three-span prestressed concrete girder bridge was the first bridge constructed in the United States utilizing high performance concrete (HPC). The girders for this bridge utilized 12,000 psi concrete and the deck utilized 8,000 psi concrete.
10th Street Viaduct Concept Study
Rehabilitation/replacement study and report development for a viaduct over a railroad corridor and city streets.
Green Pond Bridge, Falmouth, MA
Preliminary design, type, size, location and report development for a 276-foot replacement structure over a tidal inlet pond.
U.S. Highway N-64, Valley West, Douglas County, NE
Final design, two continuous prestressed concrete NU2000 girder replacement structures with lengths of 735 feet and 985 feet, crossing the Platte River. Alternate bridge designs provided with 72-inch deep welded tangent steel plate girder.
West "O" Replacement ,City of Lincoln, NE
Final design incorporating phased construction requirements for four span tangent rolled steel beam bridge with 4 degree skew and integral abutments and wall type piers.
Reynolds East, Jefferson County, NE
Final design including substructure rehabilitation and existing steel girder bridge replacement with a three-span, 115-foot slab bridge on a slight curve. Construction phasing aspects were incorporated.