Span Length
0′ 20′ 40′ 60′ 80′ 100′ OR 12 OR 15 OR 18 OR 21 OR 26 OR 30 10′ 20′ 30′ 40′ 50′ 60′ 70′ 80′ 90′ OR 12 OR 15 OR 18 OR 21 OR 26 OR 30
ODOT Section Properties (gross)
Type Depth (in) Area (in2) Yb (in4) Ixx (in4) Iyy (in4) PLF @ 165
OR 12 12" 576 5.9 6833 106037 661
OR 15 15" 569 7.4 12741 110462 653
OR 18 18" 628 8.9 21585 129072 721
OR 21 21" 703 10.4 34097 142120 807
OR 26 26" 846 12.9 63587 182246 972
OR 30 30" 931 14.9 97301 202854 1069

ODOT Voided Slab section properties show.  Typical product sections are 4′-0″ wide.

Span Length
0′ 20′ 40′ 60′ 80′ WA 12 WA 18 WA 24 WA 26 WA 30 10′ 20′ 30′ 40′ 50′ 60′ 70′ 80′ WA 12 WA 18 WA 24 WA 26 WA 30
WSDOT Section Properties (gross)
Type Depth (in) Area (in2) Yb (in4) Ixx (in4) Iyy (in4) PLF @ 165
WA 12 12" 568 6.0 6833 106037 652
WA 18 18" 658 8.9 21713 136687 756
WA 24 24" 748 11.9 47970 168440 859
WA 26 26" 844 12.9 47970 186585 969
WA 30 30" 1033 14.9 104323 104323 1168

WSDOT Voided Slab section properties show.  Typical product sections are 4′-0″ wide. WA30 4′-3 3/4″ wide.

Product Information

 

Standard voided slab design is typically governed by the State, County or Agency design criteria. In the Pacific Northwest using a nominal 4′ wide voided slab for depths up to 30″ provides the most cost effective use of the section.

“OR” – ODOT Sections

“WA” – WSDOT Sections

Product Information

 

Standard voided slab design are typically governed by the State, County or Agency design criteria.   In the Pacific Northwest using a nominal 4′ wide voided slab for depths up to 30″ provides the most cost effective use of the section.

“OR” – ODOT Sections

“WA” – WSDOT Sections

Standard Design Options

 

  • Integral precast curb options are available.
  • Slab to Slab connectors: Tie Rods or Weldments
  • Available top of slab finishes: UHPC Driving Surface ready or roughened to receive overlay
  • Rail Post Anchor Connections
  • Utility hangers
  • Integrated abutment and wing wall packages
  • Recesses for bat crevices

3D Viewer

3D Viewer Tools

 

  • 3D Viewer Functions:
  • Move, Span, Zoom Assemblies
  • Isolate Single Components in View
  • Explode Assembly Single Components
  • Use Markup to Sketch Details
  • General Measurements for Concept
  • Print Views

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 :

Eric Holje

Bridge Estimator

(509) 536-3323

LinkedIn

Sam Jewell

Outside Sales Representative

(541) 221-8599

LinkedIn

Product Family

See featured product related to solid & voided slab assemblies

View All Products

AASHTO Girder

Box Beam

Bridge Substructure

Bulb I

Bulb T

Deck Bulb Tee

Tri-Deck

WF Girder

Projects

Commercial

Industrial

Institutional

Residential

Transportation