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Historic Bridges in Maryland

968 bridges built before 1951 in Maryland still in service today.

Bridges Built Before 1951

The United States has 968 bridges in Maryland built before 1951 that remain in active service. These structures are 75+ years old — many predate modern engineering codes and were not designed for today's traffic volumes and vehicle weights. The average design life of a bridge is 50 years, making these aging structures a significant infrastructure concern.

Clear
Bridge State Condition Year Built Age (Years) ADT
TRIB. OF LINGANORE CREEK Maryland Fair 1929 97 1,309
WELDON CREEK Maryland Fair 1929 97 493
HAMILTON RUN Maryland Fair 1929 97 9,505
Maryland Midland Railway Maryland Fair 1929 97 1,105
GEORGES CREEK Maryland Fair 1930 96 1,430
BUTCHER RUN Maryland Fair 1930 96 1,430
JONES FALLS Maryland Fair 1930 96 10,911
INDIAN RUN Maryland Fair 1930 96 4,651
NCR TRAIL Maryland Fair 1930 96 5,350
LITTLE FALLS Maryland Fair 1930 96 5,350
BRICE RUN Maryland Fair 1930 96 5,551
FOURTH MINE BRANCH Maryland Fair 1930 96 5,340
MATTAWOMAN CREEK Maryland Fair 1930 96 3,231
GILBERT CREEK Maryland Good 1930 96 2,592
PLEASANT BRANCH Maryland Fair 1930 96 7,952
MONOCACY RIVER Maryland Fair 1930 96 12,583
CSX TRANS. Maryland Fair 1930 96 3,198
WINTERS RUN Maryland Fair 1930 96 20,564
SWAN CREEK Maryland Fair 1930 96 4,030
LITTLE DEER CREEK Maryland Fair 1930 96 6,673
CHESTER RIVER Maryland Fair 1930 96 13,835
HAWLINGS RIVER Maryland Fair 1930 96 10,740
MATAPONI CREEK Maryland Fair 1930 96 4,500
LOCKS SWAMP CREEK Maryland Fair 1930 96 1,951
NORFOLK SOUTHERN RR Maryland Fair 1930 96 29,484
MILL RUN Maryland Fair 1930 96 336
FLINTSTONE CREEK Maryland Fair 1930 96 141
CSXT RAILROAD Maryland Poor 1930 96 110
DEEP RUN Maryland Fair 1930 96 2,531
DEADMAN RUN Maryland Poor 1930 96 388
BRICE RUN Maryland Fair 1930 96 1,300
TRIBUTARY TO WEST BRANCH Maryland Fair 1930 96 3,000
GEORGES RUN Maryland Fair 1930 96 1,381
I-83 ABANDONED RR Maryland Fair 1930 96 18,180
UNDERGROUND CONDUIT Maryland Fair 1930 96 4,262
I-83 AND AMTRAK RAILROAD Maryland Fair 1930 96 12,191
GWYNNS FALLS CSX Maryland Good 1930 96 18,410
I-83 AND JONES FALLS Maryland Poor 1930 96 10,157
STONY RUN Maryland Fair 1930 96 11,921
EASTERN AVENUE Maryland Fair 1930 96 36,467
MOORES RUN Maryland Poor 1930 96 10,737
CSX Maryland Poor 1930 96 15,177
KEY HIGHWAY Maryland Fair 1930 96 12,887
W BRANCH OF HERRING RUN Maryland Fair 1930 96 8,543
STONEY RUN Maryland Fair 1930 96 2,220
BACK CREEK Maryland Fair 1930 96 525
BASIN RUN Maryland Poor 1930 96 94
ROCK RUN CREEK Maryland Poor 1930 96 309
PINEY CREEK Maryland Fair 1930 96 326
BIG PIPE CREEK Maryland Fair 1930 96 1,268

About Historic Bridge Data

Bridges built before 1951 are classified as historic in this database. Many were designed to 1940s standards with lower load limits and narrower lanes. While FHWA requires regular inspections of all bridges regardless of age, older structures often require more frequent monitoring and rehabilitation investment.

All Bridges Poor Condition Scour Critical Bridge Stats