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lvngstndm t1_iy8eu3i wrote

Based on Topographic Maps, and counting 20' interval contour lines - looks like its about 100 to 120' high from I-376 to the crest of the valley.

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Ginny_P OP t1_iy8jzzw wrote

Thank you soo much! Exactly what I wanted to know. Sounds like you know a lot more about bridges than I do!

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just_an_ordinary_guy t1_iycxgx7 wrote

He's a more detailed topo map using 5' intervals. The northern approach is at 950', and the old ravine floor where saline street used to be is approximately 830'. So the 120' height above ground holds, but not sure how much that changed when the parkway was build. Probably not more than a couple feet, which is within the margin of error anyhow due to 5' intervals. Doubt penndot did much more than grading.

topo map https://digital.library.pitt.edu/islandora/object/pitt%3A054e1935/viewer

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