historic context of maryland highway bridges built between 1948 ...

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SECTIONSIXResults of Field Investigationsintended to carry the eastbound lane of the new dual highway US 40 over the river. The bridge‘sdesign is significant, as it is one of only two metal deck truss highway bridges built in Marylandduring the 1948-1960 period . While the bridge has undergone emergency stringer repairs in1986 and replacement of the road deck and approach roadways in 1987, its primary characterdefiningelements as a metal deck truss bridge, especially its arched Warren truss system andconcrete supports, remain largely intact. It is also significant for its association with US 40, oneof the country‘s important intercontinental highways of the early twentieth century prior to theintroduction of the interstate system.National Register of Historic Places Eligibility:The MD 144 Bridge over the Monocacy River (MIHP # F-3-205, Bridge 1003803) in FrederickCounty is eligible for listing in the National Register under Criterion A on the state level with aperiod of significance of 1955 to 1970, for its association with US 40, one of the earlytranscontinental highways built prior to the construction of the interstate highway system. Thebridge is the third at this location that spanned the Monocacy River and that were components ofhistoric roads, including the Baltimore to Frederick Town Turnpike, Baltimore Turnpike and US40, linking the local community to Baltimore and to the Western United States, therebysupporting economic development of the region.The MD 144 Bridge over the Monocacy River is not National Register-eligible under CriterionB, as it is not associated with an individual significant on the local, state, or national level.The MD 144 Bridge is National Register-eligible under Criterion C on the local level with aperiod of significance of 1955. It is one of only three deck truss highway bridges built inMaryland during this period, and is distinguished by its arched Warren truss design. Althoughthe MD 144 Bridge has undergone some alterations to the road deck and stringers duringrehabilitations in 1986 and 1987, the bridge retains its integrity of location, design, setting,association, materials, and feeling. Replacement of its original railings and parapets has affectedthe bridge‘s integrity of workmanship.National Register-eligibility under Criterion D was not investigated as part of this study.\15-SEP-11\\ 7-22
SECTIONSIXResults of Field InvestigationsBridge #: G-06400Bridge Name: Sang Run Road Bridge over the Youghiogheny River (MIHP# G-III-A-199)County: GarrettDate of Construction: 1955Bridge Type: Steel Girder / Floorbeam SystemNRHP Eligibility/ Criterion: Criterion A and Criterion CSummary Description:Bridge No. G-06400, also known as the Sang Run Road Bridge, was built in 1955 and carriesSang Run Road across the Youghiogheny River in a rural portion of Garrett County. This is afour-span steel beam bridge with a steel grid deck supported by two concrete cantileverabutments and three stone masonry solid shaft piers with concrete aprons. Its overall length is222'-8" with a clear roadway of 17'-0". The abutments are composed of a combination of pouredconcrete and sandstone, although the sandstone is barely visible. The anchor bolts for the exteriorbearings are placed less than two inches from the edge of the beam seat. The three stone piers areroughly rectangular in form, and are composed of rubble blocks with a chiseled surface and laidin a somewhat irregular pattern. The south side of each pier comes to a point to minimizeerosion from the flow of the river, while the north ends of the piers are rounded in profile. Thesemasonry piers appear to have been hand dressed and show chisel marks. There are sevenW24x79.5 steel beams in each span, resting on steel plates with hold-down straps at each pier.The steel grid deck is open except for the concrete filled 5.75'-wide section along the north sideof the bridge that forms a pedestrian walkway. The bridge has a modern double W-beam railingin good condition that appears to have been installed within the last ten years.Statement of Significance:The Sang Run Road Bridge (MIHP # G-III-A-199, Bridge G-06400) was built in 1955 at the siteof at least two earlier bridges across the Youghiogheny River, just west of the Sang Run\15-SEP-11\\ 7-23
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F I N A L R E P O R THISTORIC CONTE
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ERRATAURS completed this report in
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Executive SummaryHA-2046PG:68-100PG
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Table of ContentsConclusion and Rec
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SECTIONONEIntroductionTwenty one br
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3. Section 1 ONE Methodolog ySECTIO
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SECTIONTWOMethodologyNineteen highw
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Page 36 and 37: SECTIONFOURPost World War II Techno
Page 42 and 43: SECTIONFIVEConsulting Engineers and
Page 48 and 49: SECTIONSIXResults of Field Investig
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Page 98 and 99: SECTIONEIGHTReferences CitedCorddry
Page 100 and 101: SECTIONEIGHTReferences CitedKaszyns
Page 102 and 103: SECTIONEIGHTReferences CitedSeely,
Page 104 and 105: Appendix A1948-1960 Maryland Bridge
Page 106 and 107: Appendix BMaryland Bridges By Type
Page 108 and 109: Appendix CResumes of Key Personnel\
Page 110 and 111: Appendix DNotes From August 25, 200
Page 112: Appendix DNotes From August 25, 200
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