State Historic Bridge Inventory and Evaluation (2024 Update)

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STATE HISTORIC BRIDGE INVENTORY AND EVALUATION 2024 UPDATE The 2013 SHBIE also involved an extensive community outreach effort and included convening a Historic Bridge Committee that acted in an advisory capacity for the project. 2024 SHBIE UPDATE This 2024 SHBIE update includes the 2013 SHBIE baseline of 707 bridges constructed between 1894 and 1968 and adds to the list 196 bridges constructed between 1968 and 1977. The scope of work for the update also included: 1. Updating the historic context through the 1980s 2. Reevaluating bridges identified as HDOT's 100 Priority Bridges 3. Identifying changes since the 2013 SHBIE including bridge replacements or major alterations 4. Providing clear and concise evaluations using the NRHP Criteria for Evaluation and aspects of integrity As part of this update, bridges identified in the 2013 SHBIE as "High Preservation Value" have been reclassified as NRHP-listed or NRHP-eligible, or as a significant historic property under 6E, as appropriate, and in accordance with state and federal historic preservation terminology. "High Preservation Value" holds no legal meaning and lacks a standard definition, obfuscating NRHP evaluation and Section 106 compliance. Bridges designated as "High Preservation Value" in 2013 that are not receiving an updated inventory form will be redesignated as eligible within the bridge lists with a footnote indicating their former"High Preservation Value" status. The 2024 SHBIE update did not reevaluate all 707 bridges from the 2013 SHBIE. However, of the total number of bridges now included in the SHBIE, the 2024 SHBIE update reviewed and/or provided an evaluation or information on 350 bridges constructed in 1977 or earlier in the following categories: • Priority Bridges:These are 100 previously identified NRHP-eligible or NRHP-listed bridges that HDOT has prioritized for future projects. All HDOT priority bridges were reevaluated on updated inventory forms and are included in this 2024 SHBIE update. 98 out of 100 priority bridges were state-owned and 2 out of 100 priority bridges were county-owned. • Potentially Altered:These are 47 NRHP-eligible or NRHP-listed bridges constructed before 1977 but altered since 2013. Review determined if the alterations potentially changed the bridge's eligibility status and warranted an update to the 2013 inventory form. Two of 47 bridges underwent alterations that changed the bridge's eligibility status;these bridges received an updated inventory form. • Previously Unevaluated:These 196 bridges were constructed between 1968 and 1977 and cover the expanded context of the 2024 SHBIE Report. Unless evaluation of these bridges determined otherwise, the majority fell under the post-1945 bridges Program Comment and/or IHS exemption and did not receive inventory forms, consistent with the approach taken in the 2013 SHBIE. o¢ 10