John H. Dager

City Line Avenue Bridge (Philadelphia County, Pennsylvania)
Architect, 1913
Deck arch bridge over East Branch Indian Creek on City Line Avenue
Open to traffic

Garges Road Bridge (Montgomery County, Pennsylvania)
Built 1911
Stone arch bridge over East Branch Perkiomen Creek on Garges Road near Schwenksville, PA
Open to traffic

Keith Valley Road Bridge (Montgomery County, Pennsylvania)
1907, 1907
Stone arch bridge over Park Creek on Keith Valley Road in Horsham Township, Pennsylvania
Open to traffic

Macoby Creek Bridge in Red Hill, PA (Montgomery County, Pennsylvania)
Built 1906
Stone arch bridge over Macoby Creek on 11th Street in Red Hill, Pennsylvania
Open to traffic

Rittenhouse Road Bridge (Montgomery County, Pennsylvania)
Built 1908
Stone arch bridge over Skippack Creek on Rittenhouse Road in Towamencin Township w/ PA. Rt. 63, Mainland, PA
Open to traffic