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)

Sort:

US 22 EB

Over: I 78 &T-572(TRI LEVEL)

FLYOVER I-78, Lehigh, PA

Built 1988 ADT: 13,763

US 22(LR 443 WB)

Over: T-572(BLUE BARN RD.)

CHAPMAN EXIT, Lehigh, PA

Built 1958 ADT: 680

SR 22(LR 443)

Over: SR 1002 (LR 443 PAR.EB)

CETRONIA EXIT, Lehigh, PA

Built 1958 ADT: 10,894

PA TPK (I-476)

Over: SR 0022 (LR771)

LEHIGH VALLEY INTERCHANGE, Lehigh, PA

Built 1956 ADT: 28,875

US 22(LR 771)

Over: PA 309(LR 39043)*

CRACKERSPORT INTERCHANGE, Lehigh, PA

Built 1973 ADT: 12,544

US 22(LR 771)

Over: T-514(SPRINGHOUSE RD.)

US 22 OVER T-514, Lehigh, PA

Built 1953 ADT: 1,800

US 22(LR 771)

Over: T-862(28TH ST.)

US 22 OVER 28TH ST., Lehigh, PA

Built 1953 ADT: 900

US 22(LR 771)

Over: T-616(WHITEHALL AVE.)

US 22 OVER WHITEHALL AVE., Lehigh, PA

Built 1953 ADT: 1,450

US 22(LR 771)

Over: LR 163* ROTH AVE.&19TH S

OVER 19TH ST./ ROTH AVE., Lehigh, PA

Built 1953 ADT: 8,156

US 22(LR 771)

Over: TWP.RD.603* 15TH STREET

15TH ST.INTERCHANGE, Lehigh, PA

Built 1953 ADT: 12,500

US 22(LR 771)

Over: TWP.RD.567* MICKLEY ROAD

0.7 M.E.OF 15TH ST.EXIT, Lehigh, PA

Built 1952 ADT: 200

US 22(LR 771)

Over: T-638(IRVING ST.)

US 22 OVER IRVING ST., Lehigh, PA

Built 1952 ADT: 2,310

I 78(LR 443)

Over: T-501(OLD 22)

NEW SMITHVILLE, Lehigh, PA

Built 1958 ADT: 1,548

I-78 (LR 443)

Over: * SR3013 (LR 39082)

NEW SMITHVILLE, Lehigh, PA

Built 1958 ADT: 4,425

I78-US22 (LR443)

Over: SR 3022 *(OLD 22)

2 MI.E.OF PA863, Lehigh, PA

Built 1958 ADT: 3,389

I-78(LR 1045)

Over: PA 100(LR 672)

FOGELSVILLE INTERCHANGE, Lehigh, PA

Built 1958 ADT: 19,356

I-78 (LR 1045)

Over: SR 3009 (RUPPSVILLE RD)

OVER RUPPSVILLE RD., Lehigh, PA

Built 1988 ADT: 5,829

I-78(LR 1045)

Over: T-572(BLUE BARN RD.)

OVER BLUEBARN RD.(T-572), Lehigh, PA

Built 1988 ADT: 200

I 78(LR 1045)

Over: SR 3008(CETRONIA RD)

OVER SR3008(CETRONIA RD), Lehigh, PA

Built 1988 ADT: 8,948

I 78(LR 1045)

Over: SR 2015(SCHANTZ RD)39105

OVER SCHANTZ ROAD, Lehigh, PA

Built 1988 ADT: 6,028

I-78 (LR 1045)

Over: PA 309(LR 781 SB)

OVER PA 309(LR 781), Lehigh, PA

Built 1989 ADT: 22,196

I-78(LR 1045)

Over: US 222(LR 157)HAMILTON

US222 EXIT #54(16), Lehigh, PA

Built 1989 ADT: 9,658

SR2057(S.HILLVIEW)

Over: I-78 and PA 309

HILLVIEW RD. OVER I-78, Lehigh, PA

Built 1988 ADT: 38,888

I-78 & PA.309

Over: PA 29&SR1019 CEDAR CREST

CEDAR CREST,EXIT #55(17), Lehigh, PA

Built 1989 ADT: 11,836

I-78(LR 1045)

Over: SR 2007 (LR 39016)

OVER OXFORD DRIVE, Lehigh, PA

Built 1989 ADT: 10,831

I- 78(LR 1045)

Over: SR 2005 (LR 158)LEHIGH

LEHIGH ST.EXIT 57(18A), Lehigh, PA

Built 1989 ADT: 13,506

SR 309(LR 153)

Over: I-78 (LR 1045)

PA.309 OVER I-78, Lehigh, PA

Built 1988 ADT: 27,603

PA 309 NB (LR 781)

Over: SR 2023 (LR 39107)

PA.309NB OVER VERA CRUZ, Lehigh, PA

Built 1958 ADT: 8,307

SR 309(LR 781)

Over: SR1002(TILGHMAN ST)LR443

TILGHMAN ST.INTERCHANGE, Lehigh, PA

Built 1958 ADT: 10,969

SR 378(LR1007SB)

Over: SR1002(UNION BLVD.)LR159

AT CENTER CITY EXIT, Lehigh, PA

Built 1967 ADT: 11,917

SR 1031(14TH AVE.)

Over: PA 378 &TRIB TO MONOCACY

14TH AVENUE, Lehigh, PA

Built 1967 ADT: 18,432

SR1018(EATON AVE.)

Over: PA 378(LR1007),RC DITCH

PA 378 UNDER EATON AVE., Lehigh, PA

Built 1967 ADT: 18,432

PA 987 (LR 39031)

Over: US 22(LR 771)

AIRPORT RD.INTERCHANGE, Lehigh, PA

Built 1973 ADT: 52,133

SR 1019 (LR 557)

Over: US 22(LR 771)

CEDAR CREST INTERCHANGE, Lehigh, PA

Built 1953 ADT: 37,998

SR2038(LR 39076)

Over: I-78(LR 1045)

OAKHURST DR. OVER I-78, Lehigh, PA

Built 1989 ADT: 27,603

SR 2055(LR158SP A)

Over: LEHIGH CRK, CITY STREETS

ALBERTUS MEYERS BRIDGE, Lehigh, PA

Built 1913 ADT: 10,890

SR 3015 (LR 39047)

Over: SR 0078(LR 443)

ADAMS RD.& WEISS RD., Lehigh, PA

Built 1958 ADT: 18,528

SR 4003 (LR39083)

Over: SR 78 (LR 443)

KECKS ROAD OVER I-78, Lehigh, PA

Built 1958 ADT: 18,528

HAMILTON STREET

Over: LEH.R., NS(0521) ALB.ST.

LEHIGH RIVER BRIDGE, Lehigh, PA

Built 1959 ADT: 200

4TH STREET

Over: JORDAN CK & SUMNER AVE.

NORTH OF TILGHMAN STREET, Lehigh, PA

Built 1959 ADT: 2,000

HAMILTON STREET

Over: UNION STREET RAMP

WEST OF RIVER BRIDGE, Lehigh, PA

Built 1959 ADT: 8,800

S.WALNUT STREET

Over: TROUT CREEK & FACTORY ST

SLATINGTON, Lehigh, PA

Built 1925 ADT: 100

PA TPK (I-476)

Over: SR2023, LR39017

1 MI SOUTH OF EMMAUS, Lehigh, PA

Built 1955 ADT: 2,218

PA TPK (I-476)

Over: T-435

UPPER MILFORD TWP,EMMAUS, Lehigh, PA

Built 1955 ADT: 200

PA TPK (I-476)

Over: SR 0029, LR158

EMMAUS BORO, Lehigh, PA

Built 1954 ADT: 22,023

SR0222, LR157

Over: PA TPK (I-476)

ALLENTOWN, Lehigh, PA

Built 1956 ADT: 44,406

PA TPK (I-476)

Over: SR 0022, LR 771

LEHIGH VALLEY INTERCHANGE, Lehigh, PA

Built 1955 ADT: 32,866

PA TPK (I-476)

Over: T-593; LIME KILN RD

NEAR ALLENTOWN,OREFIELD, Lehigh, PA

Built 1955 ADT: 200

SR4003,LR39042

Over: PA TPK (I-476)

NEAR ALLENTOWN,OREFIELD, Lehigh, PA

Built 1955 ADT: 30,563

SR 4006,LR 39041

Over: PA TPK (I-476)

6 MI NORTH OF ALLENTOWN, Lehigh, PA

Built 1955 ADT: 30,563

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026