Span Length

30′ 34′ 38′ 42′ 46′ 50′ 54′ Span Length TD27 x 3'-11 3/4" 30′ - 52′ TD27 x 4'-8" 30′ - 52′ TD27 x 4'-9 1/4" 30′ - 52′ TD27 x 5'-4" 30′ - 52′ TD27 x 5'-7 1/4" 30′ - 52′ TD27 x 5'-11 3/4" 30′ - 52′

Section Properties (gross)

HL-93 vehicle load, 52 ft. max. span (max. span is governed by handling.  U-80 vehicle load, 46 ft. max span. Alternate loading or longer spans may be acceptable with engineer review.

Product Name Depth (in) Area (in2) Yb (in4) Ixx (in4) Iyy (in4) PLF @ 165
TD27 x 3'-11 3/4" 27" 680 16.38 42149 147283 781
TD27 x 4'-8" 27" 730 16.91 44969 178431 838
TD27 x 4'-9 1/4" 27" 737 16.98 45364 184075 846
TD27 x 5'-4" 27" 787 17.35 47374 219192 904
TD27 x 5'-7 1/4" 27" 797 17.51 48272 239077 915
TD27 x 5'-11 3/4" 27" 824 17.73 49449 270057 946
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Product Information

Typical Tri-Deck height is set at 2′-3″ with a standard 6″ thick top flange adjustable in width from 48″ to 84″. The top flange can be thickened to accommodate design requirements, however, reducing the stem height is difficult and not cost effective.

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Standard Design Options

  • Integral Precast Curbs
  • Utility inserts
  • Air Entrained Decks
  • Bolts or Sleeves for Guard Rail Post Connection
  • Precast End Diaphragms
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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 :

Image's Eric Holje

Eric Holje

Bridge Estimator

phone

(509) 536-3323

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Image's Sam Jewell

Sam Jewell

Outside Sales Representative

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(541) 221-8599

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