ASM International has designated Brownsville - Route 40 Bridge an historical landmark. This bridge, designed by and built under the supervision of Capt. Richard Delafield in 1839 to improve the "National Road", is the first cast iron bridge to be built west of the Allegheny Mountains.
Road
Society: ASMMain Category: MetalsSub Category: BridgesEra: 1830-1839DateCreated: 1839Market Street east of Bank StreetBrownsvilleState: PAZip: 15417Country: USAWebsite: https://www.hmdb.org/m.asp?m=252Creator: Delafield, Richard
YearAdded:
Image Credit: WikipediaImage Caption: Brownsville bridge
1988
BreezewoodHarrisburgState: PACountry: USAWebsite: http://www.asce.org/project/pennsylvania-tunpike-(old-section)/Creator: Pennsylvania Turnpike Commission
The Pennsylvania Turnpike was the first American paved highway of the automobile era in which tolls alone were expected to pay all project costs. The 160-mile roadway, which cut an east-west path from Pittsburgh to the state capital of Harrisburg, was considered a revolutionary example of transportation system design and served as a model for the Interstate Highway System.
YearAdded:
Image Credit: Courtesy Flickr/Doug Kerr (CC BY-SA 2.0)Image Caption: Pennsylvania Turnpike (Old Section)Era_date_from: 1940
1988
Innovations
The Pennsylvania Turnpike was the first American paved highway of the automobile era in which tolls alone were expected to pay all project costs. The 160-mile roadway, which cut an east-west path from Pittsburgh to the state capital of Harrisburg, was considered a revolutionary example of…
Read MoreASM International has designated Brownsville - Route 40 Bridge an historical landmark. This bridge, designed by and built under the supervision of Capt. Richard Delafield in 1839 to improve the "National Road", is the first cast iron bridge to be built west of the Allegheny Mountains.
