Oregon. Department of Transportation. Materials and Research Section (1995). Research notes : two-rail steel-backed timber guardrail : Crown Point Highway , Multnomah Country , Oregon (Report No. RSN 95-5). Oregon. Department of Transportation. Materials and Research Section. https://rosap.ntl.bts.gov/view/dot/22699
Oregon. Department of Transportation. Materials and Research Section. Research notes : two-rail steel-backed timber guardrail : Crown Point Highway , Multnomah Country , Oregon. Report no. RSN 95-5. Oregon. Department of Transportation. Materials and Research Section, 1995. https://rosap.ntl.bts.gov/view/dot/22699.
Oregon. Department of Transportation. Materials and Research Section Research notes : two-rail steel-backed timber guardrail : Crown Point Highway , Multnomah Country , Oregon. Oregon. Department of Transportation. Materials and Research Section, 1995, Report no. RSN 95-5, ROSA P. https://rosap.ntl.bts.gov/view/dot/22699.
Details
Alternative Title:
Two-rail steel-backed timber guardrail : Crown Point Highway , Multnomah Country , Oregon.
The Oregon Department of Transportation (ODOT) installed a two-rail steel-backed timber guardrail along a section of the Historic Columbia River Highway, formerly known as the Crown Point Highway, in March 1992 as an experimental features project. The guardrail was designed to simulate the 1920s timber rail used along the Columbia River Highway which later became a national standard. The two-rail steel-backed timber guardrail was approved for use by the Federal Highway Administration (FHWA) after it was crash tested by the Texas Transportation Institute (TTI).
Oregon. Department of Transportation. Materials and Research Section (1995). Research notes : two-rail steel-backed timber guardrail : Crown Point Highway , Multnomah Country , Oregon (Report No. RSN 95-5). Oregon. Department of Transportation. Materials and Research Section. https://rosap.ntl.bts.gov/view/dot/22699
Oregon. Department of Transportation. Materials and Research Section. Research notes : two-rail steel-backed timber guardrail : Crown Point Highway , Multnomah Country , Oregon. Report no. RSN 95-5. Oregon. Department of Transportation. Materials and Research Section, 1995. https://rosap.ntl.bts.gov/view/dot/22699.
Oregon. Department of Transportation. Materials and Research Section Research notes : two-rail steel-backed timber guardrail : Crown Point Highway , Multnomah Country , Oregon. Oregon. Department of Transportation. Materials and Research Section, 1995, Report no. RSN 95-5, ROSA P. https://rosap.ntl.bts.gov/view/dot/22699.
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