Born-Digital or AnalogAnalogTranscriptDenver. Bridges Is the use of inferior concrete undermining work on bridges, streets, sidewalks' Cervi's Journal 1967 p.12 opposition to proposed W. 12th Avenue bridge gains strength. Post Mr 22, 1970 p.32 Statistics about them. RMN Ap 12, 1971 p.45 31st Street bridge over South Platte river collapses under weight of crane. Post lay 19, 1973 p:3 RY1NIy 19, 1973 p.5CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
