Lehigh County, PA

255 public highway bridges

Lehigh County Bridge Snapshot

Lehigh County, Pennsylvania contains 255 public highway bridges in the FHWA National Bridge Inventory. Roughly 28.6% are rated “Good,” 34.9% “Fair,” 7.8% “Poor,” and 7.8% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in PA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

255
Total Bridges
28.6%
Good
7.8%
Poor
7.8%
Structurally Deficient

Condition Distribution

Good
28.6% (73)
Fair
34.9% (89)
Poor
7.8% (20)
SD
7.8% (20)

All Bridges (255)

SR 378(LR 297)

Fair

Over: SAUCON CREEK

1.5 MI.N.OF PA309, Lehigh, PA

Built 1935 Load: 31.8 t ADT: 14,200

SR 4008 (LR 39049)

Fair

Over: COPLAY CREEK

LEVANS ROAD, Lehigh, PA

Built 1962 Load: 31.8 t ADT: 3,994

VALLEY ROAD

Fair

Over: LYON CREEK

SOUTH OF LYON VALLEY ROAD, Lehigh, PA

Built 1945 Load: 31.8 t ADT: 50

FULLERS BRIDGE

Fair

Over: LITTLE LEHIGH CREEK

FULLERS BRIDGE, Lehigh, PA

Built 1998 Load: 31.8 t ADT: 10

UNION BLVD

Fair

Over: ABANDONED RAILROAD

EAST OF DAUPHIN STREET, Lehigh, PA

Built 1929 Load: 32.7 t ADT: 20,199

SR 1015 (LR 39035)

Fair

Over: RR ABANDONED

FRONT STREET,ALLENTOWN, Lehigh, PA

Built 1910 Load: 32.7 t ADT: 21,385

SR 3001(LR.39021)

Fair

Over: LITTLE LEHIGH CREEK

77 FT.S.OF LR39023, Lehigh, PA

Built 1929 Load: 32.7 t ADT: 8,678

SR 4010 (LR 39091)

Fair

Over: COPLAY CREEK

SANDSPRING ROAD, Lehigh, PA

Built 1949 Load: 32.7 t ADT: 4,120

COPLAY CREEK RD

Fair

Over: COPLAY CREEK

EAST SIDE OF PA TURNPIKE, Lehigh, PA

Built 1988 Load: 32.7 t ADT: 120

WOOD STREET

Fair

Over: COPLAY CREEK

WEST OF IRONTON, Lehigh, PA

Built 1998 Load: 32.7 t ADT: 50

SR 1017(LR 39038)

Fair

Over: COPLAY CREEK

MAUCH CHUNK RD, Lehigh, PA

Built 1910 Load: 33.6 t ADT: 11,053

SR 2029(LR 39002)

Fair

Over: TRIB. SAUCON CREEK

LIMEPORT PK.@ SAUCON VAL., Lehigh, PA

Built 1953 Load: 33.6 t ADT: 6,417

SR 4024 (APPL.745)

Fair

Over: TROUT CREEK

LEHIGH FURNACE, Lehigh, PA

Built 1933 Load: 33.6 t ADT: 2,780

CHAPEL AVENUE

Fair

Over: TROUT RUN

NORTH OF EMAUS AVE., Lehigh, PA

Built 1987 Load: 33.6 t ADT: 650

WATER STREET

Fair

Over: COPLAY CREEK

BET. LEHIGH & EBERHART RD, Lehigh, PA

Built 1941 Load: 33.6 t ADT: 390

SR 4016 (LR 175)

Fair

Over: LEHIGH RIVER

SLATINGTON-WALNUTPORT, Lehigh, PA

Built 1969 Load: 33.7 t ADT: 11,151

PA TPK (I-476)

Fair

Over: NFS RR

EMMAUS BOROUGH, Lehigh, PA

Built 1955 Load: 34.5 t ADT: 44,406

SR 6100 (LR486)

Fair

Over: SPRING CREEK

AT SPRING CREEK ROAD, Lehigh, PA

Built 1957 Load: 35.0 t ADT: 12,111

I-78(LR 443)

Fair

Over: IRON RUN

2 MI.W.OF FOGELSVILLE, Lehigh, PA

Built 1958 Load: 35.4 t ADT: 37,909

SR 2029(LR 39002)

Fair

Over: SAUCON CREEK

LIMEPORT PIKE, Lehigh, PA

Built 1927 Load: 35.4 t ADT: 6,417

SR 2027(LR39001)

Fair

Over: LEIBERT CREEK

VILLAGE OF VERA CRUZ, Lehigh, PA

Built 1979 Load: 36.3 t ADT: 3,574

SOUTH TENTH STREET

Fair

Over: LITTLE LEHIGH CREEK

SOUTH OF DR.M.L.KING DR., Lehigh, PA

Built 1932 Load: 36.3 t ADT: 1,000

PA 29(LR 158)

Fair

Over: LEIBERT CREEK

0.1MI.N.OF PA TURNPIKE, Lehigh, PA

Built 1997 Load: 36.3 t ADT: 22,023

SR 4009 (LR39057)

Fair

Over: MILL CREEK

NEWSIDE RD.@ MEMORIAL RD., Lehigh, PA

Built 2012 Load: 37.3 t ADT: 765

PA 309 (LR 226)

Fair

Over: ONTELAUNEE CREEK

2 MI.N.OF PA143, Lehigh, PA

Built 1930 Load: 38.1 t ADT: 8,355

SR 4025 (LR 39064)

Fair

Over: LYON CREEK

LYON VALLEY ROAD, Lehigh, PA

Built 1964 Load: 38.1 t ADT: 621

2nd Ave Ramp

Fair

Over: Krause Ln; West St.

NW Ramp to Hill to Hill, Lehigh, PA

Built 1921 Load: 38.1 t ADT: 50

SR 1014 (LR 39037)

Fair

Over: COPLAY CREEK

LEHIGH ST AT SIXTH ST, Lehigh, PA

Built 2013 Load: 38.9 t ADT: 12,577

PA 100(LR 486)

Fair

Over: SWABIA CREEK

MAIN ST.,MACUNGIE, Lehigh, PA

Built 1969 Load: 39.0 t ADT: 11,577

SR 4014 (LR 39052)

Fair

Over: FELLS CREEK

NEFFS LAURY RD.@ SCHEIDYS, Lehigh, PA

Built 1969 Load: 39.0 t ADT: 324

SR 1019 (LR 39040)

Fair

Over: JORDAN CREEK

INT.W/IRON BRIDGE RD., Lehigh, PA

Built 1957 Load: 39.9 t ADT: 12,756

SR 2025(LR 39005)

Fair

Over: INDIAN CREEK

.7 MI. N. OF SR 2029, Lehigh, PA

Built 1933 Load: 40.8 t ADT: 492

SR 2025(LR 39005)

Fair

Over: INDIAN CREEK

POWDER VAL.& BATMAN RD, Lehigh, PA

Built 1933 Load: 40.8 t ADT: 492

BUSINESS PARK LANE

Fair

Over: TRIB TO LEHIGH RIVER

100'NORTH OF AMERICAN PWY, Lehigh, PA

Built 1996 Load: 40.8 t ADT: 500

CHESTNUT STREET

Fair

Over: COPLAY CREEK

SOUTHEAST OF EGYPT, Lehigh, PA

Built 2010 Load: 41.5 t ADT: 6,938

WALNUT STREET

Fair

Over: CATASAUQUA CREEK

AT ST. JOHN STREET, Lehigh, PA

Built 1950 Load: 41.7 t ADT: 1,000

SR 1017 (LR 39038)

Fair

Over: JORDAN CREEK

INTERSECTION OF SR 1021, Lehigh, PA

Built 1949 Load: 43.5 t ADT: 15,389

SR 4014 (LR 39052)

Fair

Over: FELLS CREEK

@ LEDGE ROAD, Lehigh, PA

Built 1983 Load: 44.5 t ADT: 247

FAIRMOUNT STREET

Fair

Over: TRIB.TO SAUCON CREEK

WEST OF MAIN ST., Lehigh, PA

Built 1977 Load: 46.3 t ADT: 410

W. UNION BLVD.

Fair

Over: MONOCACY CREEK

EAST OF PA 378, BETHLEHEM, Lehigh, PA

Built 1997 Load: 46.3 t ADT: 21,872

SR 78(LR 1045)

Fair

Over: NORFOLK SOUTHERN RR

NEAR LEHIGH ST.EXIT, Lehigh, PA

Built 1989 Load: 48.1 t ADT: 70,840

AUBURN STREET

Fair

Over: TROUT CREEK

NEAR SOUTH FOURTH STREET, Lehigh, PA

Built 1978 Load: 48.1 t ADT: 1,200

SUMNER AVE.EXTENT.

Fair

Over: JORDAN CREEK

AMERICAN PARKWAY, Lehigh, PA

Built 1996 Load: 48.1 t ADT: 300

HOLLENBACH ROAD

Fair

Over: JORDAN CREEK

NORTH OF LOWHILL, Lehigh, PA

Built 1944 Load: 49.0 t ADT: 200

SCHOENERSVILLE RD.

Fair

Over: MONOCACY CREEK

AT PAINT MILL, Lehigh, PA

Built 2005 Load: 49.0 t ADT: 16,191

PA309 (LR153)

Fair

Over: TUMBLE BROOK

0.4 MI.S.OF SR 2028, Lehigh, PA

Built 1970 Load: 49.9 t ADT: 31,148

I 78(LR 1045)

Fair

Over: NORFOLK/SOUTHERN RR

1.2 MI.E.OF PA100, Lehigh, PA

Built 1988 Load: 51.7 t ADT: 113,637

SR 2037(LR 39077)

Fair

Over: NORFOLK SO. (LINE 0312)

FOURTH ST,BORO OF EMMAUS, Lehigh, PA

Built 1918 Load: 51.7 t ADT: 2,148

PA TPK (I-476)

Fair

Over: JORDAN CREEK

NEAR ALLENTOWN,OREFIELD, Lehigh, PA

Built 1955 Load: 51.7 t ADT: 27,609

S MAIN ST

Fair

Over: LEHIGH CANAL

RIVER STREET BRIDGE, Lehigh, PA

Built 1988 Load: 52.6 t ADT: 100

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial