Corpus by SalemWise helps civil engineering firms win work from their past projects: search the archive, and get help with bid/no-go, SOQ drafts, fees and contracts. Every answer cites its document and page. If the archive doesn't hold the answer, Corpus says so.
How to try it: pick a role and ask a question. No signup. The sample firm, Cedar Run Civil + Water, is fictional; its documents are publicly available public records.