Span Length

60′ 68′ 76′ 84′ 92′ 100′ 108′ Span Length Type II 60′ - 80′ Type III 70′ - 100′

Section Properties (gross)

Preliminary span lengths shown, contact Knife River for specific project details

Type Depth (in) Area (in2) Yb (in4) Ixx (in4) Iyy (in4) PLF @ 165
Type II 45" 559 20.3 125387 12216 642
Type III 54" 788 24.8 260403 24282 905

Product Information

Knife River precast can produce type II and III profile girders that are designed for use with a composite concrete field-cast deck.

Standard Design Options

  • Form Inserts
  • Utility Inserts
  • Sleeves or Inserts for CIP diaphragms
Technical drawing of an ASTM A36 steel angle section showing a symmetrical flanged profile with detailed dimension annotations. Technical drawing of a dumbbell-shaped ABSHTD Type B tensile test specimen with dimensioned measurements. Large precast concrete wall or barrier on a wooden barge, with lifting chains and a metal bracket, set against a lake and tree-lined shore. Concrete beams and columns under construction with exposed rebar and formwork against a cloudy sky. A large concrete bulbous bow section suspended by cranes at a shipyard, with workers and materials on the deck below. A crane hoists a long concrete slab over a dock where workers watch, with marked barges alongside.

Need More Info?

We Are Here to Help

 

Have a question, need a budget or detailed schedule?  Knife River sales team is ready to discuss precast solutions for your project.  Reach out to our staff below :

A smiling bearded man in a black polo shirt with the Knife River logo on the chest.

Andy Roberts

Outside Sales, ID & MT

phone

509.904.8610
Portrait of Nikolaus Mixon, a bald man with glasses and a beard wearing a dark polo shirt with a Knife River logo.

Nikolaus Mixon

Outside Sales, OR & CA

phone

541.257.7412
Smiling man with a shaved head wearing a black Knife River polo shirt, likely a team member on the Our Team page.

Alex Sari

Outside Sales, WA & AK

phone

(509) 992-5614

 linkedin

LinkedIn

Product Family

See featured product related to AASHTO assemblies

All Products

Box Beam

Box Beams are typically used for 80′-118′ bridge spans. The design allows for a typical 4′ width section to include integral voids which reduce the product weight and are often used when box depth and speed of construction are part ...

View Product
A black rectangular frame with a white cutout center, resembling a SIM card tray or photo frame.

Bridge Substructure

Accelerated Bridge Construction utilizes precast bridge substructure products. Total precast abutments, bent caps, pile caps and wingwalls offer many advantages. They can be precast to precise specifications of the design in a plant controlled settin...

View Product
Tapered single-cell box girder cross section showing the narrowed lower portion connecting to the pier.

Bulb I

The Bulb I (BI51, BI63 and BI75) is a less commonly used ODOT standard girder for medium to long length span bridges. It utilizes the BT section with the deck blocked in to achieve difficult site requirements such as heavy super elevations and vertic...

View Product
A black I-beam cross-section shape on a white background, representing a structural steel beam used in construction.

Bulb T

The Oregon Bulb-Tee (BT) girder is the preferred choice for most Oregon medium to long span bridges requiring a CIP deck. Bulb Tee precast/prestressed girders are typically used in spans from 60-185′ with significant loading.

View Product
Bold black uppercase serif letterform T on a white background.

Deck Bulb Tee

Deck Bulb Tee Girders combine a precast deck with the traditional I-Girder design. This design offers the advantage of an immediate driving surface, or alternatively, a roughened surface that allows for the addition of a secondary overlay or a Cast-I...

View Product
Deck bulb tee: a steel structural component with a top flange, tapered stem, and bulb-shaped foot.

Tri-Deck

Tri-Deck girders are an adjustable top flange width, multi-stemmed unit designed for full deck use. Tri-Deck bridges are typically used for bridge spans from 30′-52′ which require a longer span and lower profile section. Typically Tri-Dec...

View Product
Tri-Deck structure with three vertical supports beneath a horizontal beam.

Voided-Solid Slabs

Voided Slabs are typically used for 15-85′ bridge spans but can be used in building applications where significant design loads are required. Voided slab design allows for a typical 4′ width slab to include integral voids which reduce the...

View Product
Black slab with two circular voids illustrating a voided-solid slab design.

WF Girder

The wide flange (WF) girder is the primary bridge girder section used by Washington State Department of Transportation (WSDOT) and Idaho Transportation Department (ITD). WF Girders are typically used in spans of 70-200’ using sections ranging from 36...

View Product
Steel I-beam cross-section with flanges and web for structural support.

Projects

Commercial

Industrial

Institutional

Residential

Transportation