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 NameDepth (in)Area (in2)Yb (in4)Ixx (in4)Iyy (in4)PLF @ 165
TD27 x 3'-11 3/4"27"68016.3842149147283781
TD27 x 4'-8"27"73016.9144969178431838
TD27 x 4'-9 1/4"27"73716.9845364184075846
TD27 x 5'-4"27"78717.3547374219192904
TD27 x 5'-7 1/4"27"79717.5148272239077915
TD27 x 5'-11 3/4"27"82417.7349449270057946
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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 Alex Sari

Alex Sari

Outside Sales Representative

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(509) 992-5614

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Image's Eric Holje

Eric Holje

Bridge Estimator

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(509) 536-3323

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