| I 78(LR 1045) over Norfolk/southern RR | 1988 | 126,705 | Fair |
| I-78 (lr 1045) over SR 3009 (ruppsville Rd) | 1988 | 126,705 | Good |
| I-78(LR 1045) over Pa 100(LR 672) | 1958 | 126,705 | Fair |
| US 22 (lr 771) over Leh. Canal SR 1007 NSR | 2017 | 92,608 | Good |
| US 22 (lr 771) over Lehigh River | 2017 | 92,608 | Good |
| US 22(LR 771) over T-638(irving St.) | 1952 | 92,608 | Good |
| I-78 & Pa 309 over SR 2010 & Lt Lehigh CR | 1958 | 83,965 | Fair |
| I-78(LR 1045) over SR 2007 (lr 39016) | 1989 | 83,965 | Fair |
| I-78(LR 1045) over US 222(LR 157)HAMILTON | 1989 | 81,849 | Fair |
| I-78 & PA.309 over Pa 29&sr1019 Cedar Crest | 1989 | 80,843 | Fair |
| US 22(LR 771) over Jordan Creek | 1952 | 76,351 | Fair |
| US 22(LR 771) over Lr 163* Roth AVE.&19TH S | 1953 | 76,351 | Fair |
| US 22(LR 771) over Pa 309(LR 39043)* | 1973 | 76,351 | Fair |
| US 22(LR 771) over T-514(springhouse Rd.) | 1953 | 76,351 | Fair |
| US 22(LR 771) over T-616(whitehall Ave.) | 1953 | 76,351 | Fair |
| US 22(LR 771) over T-862(28th St.) | 1953 | 76,351 | Fair |
| US 22(LR 771) over TWP.RD.567* Mickley Road | 1952 | 76,351 | Fair |
| US 22(LR 771) over TWP.RD.603* 15TH Street | 1953 | 76,351 | Fair |
| I- 78(LR 1045) over SR 2005 (lr 158)LEHIGH | 1989 | 70,840 | Fair |
| I-78(LR 1045) over SR 2002 (lr 39013) | 1989 | 70,840 | Good |
| I-78(LR 1045) over SR 2023(LR 39107) | 1989 | 70,840 | Good |
| SR 78(LR 1045) over Norfolk Southern RR | 1989 | 70,840 | Fair |
| Pa 145 (lr 555) over Sumner Ave. | 1960 | 63,939 | Fair |
| Pa 145(LR 555) over Jordan Creek | 1929 | 63,939 | Fair |
| SR 22(LR 443) over SR 1002 (lr 443 Par.eb) | 1958 | 63,032 | Fair |
| I-78 (lr 1045) over Trib. to Saucon Creek | 1989 | 60,992 | Good |
| SR 309(LR 781) over SR1002(TILGHMAN ST)LR443 | 1958 | 58,753 | Fair |
| Pa Tpk (I-476) over SR2023 LR39017 | 1955 | 49,446 | Good |
| SR 309(LR 153) over I-78 (lr 1045) | 1988 | 48,199 | Fair |
| SR 309(lr781) over TWP.RD.870(BROADWAY St.) | 1958 | 46,398 | Fair |
| Pa Tpk (I-476) over Nfs RR | 1955 | 44,406 | Fair |
| Pa Tpk (I-476) over SR 0029 LR158 | 1954 | 44,406 | Fair |
| Pa Tpk (I-476) over SR 2029 LR39002 | 1955 | 44,406 | Fair |
| Pa Tpk (I-476) over SR 2040 LR39106 | 1955 | 44,406 | Fair |
| Pa Tpk (I-476) over T-392 | 1955 | 44,406 | Good |
| Pa Tpk (I-476) over T-426 | 1955 | 44,406 | Fair |
| Pa Tpk (I-476) over T-435 | 1955 | 44,406 | Fair |
| I-78(LR 443) over Iron Run | 1958 | 42,666 | Fair |
| I78-us22 (LR443) over SR 3022 *(old 22) | 1958 | 42,666 | Fair |
| US 222 over Iron Run | 2005 | 40,766 | Fair |
| Pa Tpk (I-476) over Tr. Little Lehigh Crk | 1955 | 39,061 | Fair |
| I 78(LR 443) over T-501(old 22) | 1958 | 38,707 | Fair |
| I-78 (lr 443) over * SR3013 (lr 39082) | 1958 | 38,707 | Fair |
| SR 78(LR 443) over Mill Creek * | 1958 | 38,707 | Fair |
| Pa 145 (LR771) over US 22 | 2013 | 36,689 | Good |
| Pa 378 (lr 1007) over US 22 (lr 772) | 1999 | 35,929 | Good |
| Pa 378(LR 297) over Lehigh Riv R.R. City Sts | 1924 | 35,929 | Fair |
| Pa 378(lr1007) over Earth Embankment | 1967 | 35,929 | Good |
| PA309 (LR153) over Tumble Brook | 1970 | 34,519 | Fair |
| PA309 (LR153) over Saucon Creek | 1970 | 34,060 | Good |
| I 78(LR 1045) over Oakview Rd.t-866 | 1988 | 32,735 | Fair |
| I 78(LR 1045) over SR 2015(SCHANTZ RD)39105 | 1988 | 32,735 | Fair |
| I 78(LR 1045) over SR 3008(CETRONIA Rd) | 1988 | 32,735 | Good |
| I-78 (lr 1045) over Pa 309(LR 781 SB) | 1989 | 32,735 | Good |
| I-78(LR 1045) over Pa.turnpike(i-476)ne Ext | 1988 | 32,735 | Fair |
| I-78(LR 1045) over T-572(blue Barn Rd.) | 1988 | 32,735 | Fair |
| Pa Tpk (I-476) over SR 0022 Lr 771 | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over SR 0329 LR39038 | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over SR 3008 LR39043 | 1956 | 30,563 | Fair |
| Pa Tpk (I-476) over SR 309 | 1955 | 30,563 | Good |
| Pa Tpk (I-476) over SR 4008 Lr 39049 | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over SR 4010 LR39091 | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over SR 4014 | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over T-593; Lime Kiln Rd | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over T-599 Huckleberry Rd | 2022 | 30,563 | Good |
| Pa Tpk (I-476) over T-665 | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over T-707; Glencrest Road | 1955 | 30,563 | Fair |
| Pa Tpk (I-476) over Crackersport Road | 2018 | 29,325 | Good |
| Pa Tpk (I-476) over Jordan Creek | 1955 | 27,609 | Fair |
| Pa Tpk (I-476) over T-858 | 1956 | 27,609 | Fair |
| Pa 309(LR 153) over Saucon Creek | 1929 | 27,279 | Fair |
| US 22(LR 443 WB) over T-572(blue Barn Rd.) | 1958 | 27,261 | Fair |
| US 22 EB over I 78 &t-572(tri Level) | 1988 | 26,951 | Fair |
| US 222(LR 157) over Schaefer Run | 2021 | 25,871 | Good |
| Pa Tpk (I-476) over SR 4018 & Trout Creek | 2016 | 25,000 | Good |
| Hamilton Street over Leh.r. NS(0521) Alb.st. | 1959 | 24,900 | Fair |
| Pa 987 (lr 39031) over US 22(LR 771) | 1973 | 22,643 | Fair |
| W. Union Blvd. over Monocacy Creek | 1997 | 21,872 | Fair |
| Ramp Ab over Pa Tpk (I-476) | 1956 | 21,503 | Poor |
| SR 29(LR 557) over Little Lehigh Creek | 1958 | 20,959 | Fair |
| Pa 309 NB (lr 781) over SR 2023 (lr 39107) | 1958 | 20,874 | Fair |
| Pa 309(LR 163) over Jordan Creek | 1956 | 20,836 | Fair |
| SR 0222 over over Norfolk Southern RR | 2007 | 20,403 | Good |
| US 222 SB & Ramp over Eastern Ind.access Rd. | 2005 | 20,403 | Good |
| US 222 SB over Pa 100 | 2007 | 20,403 | Good |
| US 222 SB over over SR 8032/7476/2015 | 2007 | 20,403 | Good |
| US 222 over over SR 3008 | 2006 | 20,403 | Good |
| SR 0222 over over Norfolk Southern RR | 2007 | 20,363 | Good |
| US 0222 over over SR 8032/7476/2015 | 2007 | 20,363 | Good |
| US 222 NB over Eastern Ind.access Rd. | 2005 | 20,363 | Good |
| US 222 NB over Pa 100 | 2006 | 20,363 | Good |
| US 222 over over SR 3008 | 2006 | 20,363 | Good |
| SR 1002 (lr 443) over Private Rd.& L.cedar Ck. | 1936 | 20,101 | Fair |
| 15TH Street over Mlk Jr. Drive | 2013 | 20,000 | Good |
| Ward Street over Little Lehigh Creek | 2013 | 20,000 | Good |
| SR 1002 LR443 over Pa Tpk (I-476) | 1955 | 19,619 | Fair |
| SR 2055(lr158sp A) over Lehigh Crk City Streets | 1913 | 18,800 | Fair |
| SR 1011(LR 48129) over Pa 378(LR 1007) | 1967 | 18,578 | Fair |
| SR1011 (8TH Ave) over Norfolk Southern RR | 1967 | 18,578 | Poor |
| Pa 29(LR 158) over Leibert Creek | 1997 | 18,552 | Fair |
| Pa 29(LR 158) over Norfolk/Southern RR | 2021 | 18,552 | Good |
| Pa 378 (LR1007NB) over SR1002(UNION BLVD.)LR159 | 1967 | 18,432 | Fair |
| SR 1009 (LR48049) over US 22(LR 772)9402/9406 | 1998 | 18,359 | Fair |
| SR1002TILGHMAN/157 over Lehigh River Corman RR | 1929 | 17,700 | Fair |
| SR 378(lr1007sb) over SR1002(UNION BLVD.)LR159 | 1967 | 17,497 | Fair |
| SR 1019 (lr 557) over US 22(LR 771) | 1953 | 17,206 | Fair |
| Pa 145(LR 555) over Ironton Rr/bike Path | 1970 | 17,057 | Fair |
| SR145(LR555) over Coplay Creek | 1941 | 17,057 | Fair |
| SR 1017 (lr 39038) over Jordan Creek | 1949 | 16,540 | Fair |
| SR 1015 (lr 39035) over RR Abandoned | 1910 | 16,440 | Fair |
| SR 1019(LR 557) over Cedar Creek | 1957 | 16,333 | Good |
| SR 1019(LR 557) over Little Cedar Creek | 2018 | 16,333 | Good |
| Schoenersville Rd. over Monocacy Creek | 2005 | 16,191 | Fair |
| SR0222 LR157 over Pa Tpk (I-476) | 1956 | 16,122 | Fair |
| SR 1002(lr443 Par) over Norfolk Southern RR | 1940 | 15,826 | Good |
| SR 1002(lr443 Par) over T-574(chapmans Rd.) | 2012 | 15,826 | Good |
| Pa 145(LR 175) over Fells Creek | 1926 | 15,708 | Fair |
| SR 1015 (lr 39035) over US 22 (lr 771) | 2016 | 15,280 | Good |
| Hamilton Street over Union Street Ramp | 1959 | 15,000 | Fair |
| Basin Street over Little Lehigh Creek | 1959 | 14,700 | Poor |
| Hamilton St over Cedar Creek | 2019 | 14,282 | Good |
| Pa 100(LR 672) over Trib. Lyon Creek | 1964 | 14,216 | Fair |
| SR 378(LR 297) over Saucon Creek | 1935 | 14,200 | Fair |
| Pa 873 over Trout Creek | 2008 | 14,109 | Good |
| Union Blvd over Abandoned Railroad | 1929 | 14,054 | Fair |
| SR 329(LR 175) over Lehigh River | 1933 | 13,934 | Poor |
| SR 1016(BROAD St.) over SR 378(LR 1007) | 1967 | 13,913 | Fair |
| Pa 100(LR 672) over Hassen Creek | 1932 | 13,876 | Fair |
| Pa 100(LR 672) over Trib.hassen Creek | 1964 | 13,876 | Good |
| SR 1019 (lr 39040) over Jordan Creek | 1957 | 13,821 | Fair |
| Pa 100(LR 486) over Trib. Swope Creek | 1960 | 13,761 | Fair |
| South Lehigh St. over Little Lehigh Creek | 2023 | 13,748 | Good |
| Hamilton Street over Jordan Creek & Rjcn | 1973 | 13,600 | Poor |
| SR 2044(LR 39002) over Trib. to Saucon Creek | 1990 | 13,502 | Fair |
| SR 2044(LR 39002) over Trib.to Saucon Creek | 1989 | 13,502 | Good |
| Pa 29/100(LR 158) over Indian Creek | 2018 | 13,199 | Good |
| SR 6100 (LR486) over Spring Creek | 1957 | 13,182 | Good |
| SR1020CATASAUQUARD over Pa 378(lr1007) | 1967 | 12,971 | Fair |
| Pa 145/SUSQUEHANNA over Trout Creek & N.S. RR | 1989 | 12,801 | Good |
| US 222 NB over Pa 100 SB | 2005 | 12,726 | Good |
| US 222 NB over SR 6222 SB | 2005 | 12,726 | Good |
| Pa 100(LR 672) over Lyon Creek | 1964 | 12,205 | Fair |
| SR2012 LR39023 over Pa Tpk (I-476) | 1955 | 11,897 | Fair |
| SR 1017(LR 39038) over Coplay Creek | 1910 | 11,880 | Fair |
| SR1018(EATON Ave.) over Pa 378(lr1007) Rc Ditch | 1967 | 11,796 | Fair |
| Pa 100(LR 486) over Swabia Creek | 1969 | 11,577 | Fair |
| Race Street over Catasauqua Creek | 2019 | 11,491 | Good |
| SR 1004(LR 39032) over Lehigh Canal | 1997 | 11,491 | Good |
| SR1004;LR39032/125 over Lehigh River | 1957 | 11,491 | Fair |
| Pa 100(LR 672) over Jordan Creek | 1964 | 11,304 | Fair |
| Chestnut Street over Lehigh R/bridge St/ns RR | 2018 | 11,259 | Good |
| Pa 100(LR 672) over Jordan Creek | 1932 | 11,127 | Fair |
| SR 6100 over Iron Run Tributary | 2005 | 11,101 | Good |
| Mickley Road over Jordan Creek | 2006 | 11,000 | Good |
| SR 2002(LR 39013) over East Penn Railroad Llc | 1963 | 10,922 | Fair |
| Union Street over Jordan Creek | 1981 | 10,100 | Fair |
| SR 1002 (lr 157) over Jordan Creek & Streets | 1986 | 10,064 | Fair |
| SR 2045(LR 153SP) over Trib. to Saucon Creek | 1912 | 10,024 | Fair |
| PA100 (LR486) over Little Lehigh Creek | 1957 | 10,011 | Good |
| Pa Tpk (I-476) over SR 0022 (LR771) | 1956 | 10,000 | Fair |
| SR 3012 Lr 39046S over Schaefer Run | 2021 | 9,913 | Good |
| SR 3012(LR 39046) over Iron Run | 1960 | 9,813 | Good |
| SR1002WB(LR443PAR) over US 22(LR 771) | 1953 | 9,810 | Fair |
| Pa 873 (lr 163) over Lehigh River & N/S RR | 1930 | 9,562 | Fair |
| SR 2017 (lr 39025) over Swabia Creek | 1957 | 9,297 | Fair |
| SR 2017(lr39025) over Little Lehigh Creek | 1957 | 9,297 | Poor |
| Pa 309 (lr 226) over Ontelaunee Creek | 1930 | 9,244 | Fair |
| SR 4016 (lr 175) over Lehigh River | 1969 | 9,089 | Fair |
| Hamilton Blvd over Iron Run | 2018 | 8,646 | Good |
| SR 3001(lr.39021) over Little Lehigh Creek | 1929 | 8,616 | Fair |
| Lehigh Street over Water St Lehigh Riv. NS | 2015 | 8,600 | Good |
| SR 1014 (lr 39037) over Coplay Creek | 2013 | 8,600 | Fair |
| SR 3003(LR 39085) over Little Lehigh Creek | 1961 | 8,372 | Fair |
| SR 2045 over Tumble Brook | 2009 | 8,116 | Good |
| Linden Street over Jordan Creek & Railroad | 2010 | 8,100 | Good |
| Pa 309(LR 226) over Jordan Creek | 1962 | 8,042 | Good |
| Pine Street over Lehigh R. NS RR Water St | 1953 | 8,000 | Poor |
| SR 2007 (lr 39016) over L.lehigh & Towpath | 1960 | 7,791 | Fair |
| SR 1023 (APPL.7) over Coplay Creek | 1921 | 7,751 | Fair |
| SR 0873 Lr 163 over Pa Tpk (I-476) | 1955 | 7,745 | Fair |
| SR 2010 (lr 39109) over Little Lehigh Creek | 1939 | 7,302 | Poor |
| SR 2029(LR 39002) over Saucon Creek | 1927 | 6,993 | Fair |
| SR 2029(LR 39002) over Trib. Saucon Creek | 1953 | 6,993 | Poor |
| Chestnut Street over Coplay Creek | 2010 | 6,938 | Fair |
| Pa 145SB(LR 153) over Pa 309 Nb(lr 781) | 1958 | 6,789 | Fair |
| SR8005(LR1045RPLB) over Norfolk Southern RR | 1988 | 6,755 | Fair |
| Pa 100 NB over SR 6222 and Schaefer Run | 2005 | 6,469 | Good |
| SR 100 SB over SR 6222 and Schaefer Run | 2005 | 6,238 | Good |
| Mch Chk Rd & Ramp over Storm Sewer | 1978 | 6,056 | Fair |
| SR 2039 (lr 39114) over Saucon Creek | 1985 | 5,839 | Good |
| SR 3017 over Schaefer Run | 2005 | 5,837 | Poor |
| SR 1007 (lr 153SP) over Catasauqua Creek | 1913 | 5,758 | Fair |
| Gordon Street over Jordan Creek | 2020 | 5,751 | Good |
| SR 2045 over Trib. Saucon Ck | 2011 | 5,695 | Good |
| SR2059(W.ROCK Rd.) over I-78 & Pa 309 | 1988 | 5,666 | Fair |
| SR 4003 (lr 39048) over Jordan Creek | 1929 | 5,129 | Fair |
| Lr 39088 SR 4001 over Pa Tpk (I-476) | 1955 | 5,034 | Fair |
| 4TH Street over Jordan Ck & Sumner Ave. | 1959 | 5,000 | Poor |
| American Parkway over Jordan Dr | 2015 | 5,000 | Good |
| American Parkway over Lehigh River/SR 1007/RR | 2015 | 5,000 | Good |
| SR4003 LR39042 over Pa Tpk (I-476) | 1955 | 4,899 | Fair |
| Ramp Ld-sr 8005 over Norfolk Southern RR | 1989 | 4,723 | Good |
| PA309 (lr 226) over Mill Creek | 1962 | 4,479 | Fair |
| PA309 (lr 226) over Trib. Mill Creek | 1962 | 4,479 | Good |
| SR 4010 (lr 39091) over Coplay Creek | 1949 | 4,428 | Fair |
| SR 4008 (lr 39049) over Coplay Creek | 1962 | 3,994 | Fair |
| SR 2027(LR 39001) over Leiberts Creek | 1987 | 3,841 | Fair |
| SR 2027(lr39001) over Leibert Creek | 1979 | 3,841 | Fair |
| Springhouse Road over Little Cedar Creek | 1963 | 3,800 | Fair |
| Willow Brook Road over Trib to Catasauqua CR | 2021 | 3,747 | Good |
| SR 4024 Lr 39119 over Pa Tpk (I-476) | 1956 | 3,454 | Fair |
| SR 2027 (lr 39002) over Hosensack Creek | 2009 | 3,384 | Good |
| Downyflake Lane over Norfolk Southern RR | 1987 | 3,310 | Good |
| SR 3015 (lr 39047) over SR 0078(LR 443) | 1958 | 3,287 | Fair |
| SR 3001(LR 39023) over Spring Creek | 2012 | 3,180 | Good |
| SR 2009 (lr 39028) over Cedar Creek | 1959 | 3,161 | Good |
| SR 4024 (APPL.745) over Trout Creek | 1933 | 3,029 | Fair |
| Pa 143 (lr 285) over Br. Ontelaunee Creek | 1926 | 3,006 | Fair |
| Pa 143(LR 285) over Ontelaunee Creek | 1921 | 3,006 | Fair |
| Old Mickley Road over Helfrich Spring Pond | 1920 | 3,000 | Fair |
| Ott Street over Cedar Creek | 1955 | 3,000 | Good |
| S.walnut Street over Trout Creek & Factory St | 1925 | 3,000 | Poor |
| SR 2029(lr.39002) over Hosensack Creek | 1933 | 2,882 | Poor |
| SR 2031 over Hosensack Creek | 2010 | 2,761 | Good |
| Pa 143 (lr 285) over Trib. Ontelaunee Creek | 1926 | 2,742 | Fair |
| SR2027 LR39001 over Pa Tpk (I-476) | 2022 | 2,734 | Good |
| Union Street over Cedar Creek | 2014 | 2,700 | Good |
| SR 1027 (LR175) over Spring Creek | 2015 | 2,488 | Good |
| SR 4003 (LR39083) over SR 78 (lr 443) | 1958 | 2,487 | Fair |
| SR 2024 (lr 39007) over Laurel Run | 2023 | 2,445 | Good |
| SR 2024 (lr 39007) over Trib. to Saucon Creek | 1962 | 2,445 | Good |
| SR 4006 Lr 39041 over Pa Tpk (I-476) | 1955 | 2,441 | Fair |
| SR 2037(LR 39077) over Norfolk So. (line 0312) | 1918 | 2,309 | Fair |
| Pa 863 (lr 39066) over I-78 (lr 443) | 2016 | 2,221 | Good |
| Old Mill Rd over Trib.to Little Trout Ck. | 1914 | 2,200 | Good |
| SR 2013 (lr 39029) over Cedar Creek | 1953 | 2,148 | Fair |
| Pa 143 (lr 285) over Trib. Ontelaunee Creek | 1926 | 2,115 | Fair |
| M.l.king Jr. Drive over Cedar Creek | 1994 | 2,100 | Good |
| Shimerville Road over Leiberts Creek | 1987 | 2,100 | Fair |
| Pa 143 (lr 285) over Trib. Ontelaunee Creek | 1926 | 2,062 | Fair |
| SR 2016 (LR39006) over Trib. to Hosensack Creek | 1934 | 2,035 | Fair |
| SR 4040 (lr 39072) over Trib. to Lyon Creek | 1930 | 1,946 | Fair |
| SR 4018 (APPL.745) over Trout Creek | 2012 | 1,825 | Good |
| SR 4018 (Appl 745) over Trout Creek | 2017 | 1,825 | Good |
| SR2057(S.HILLVIEW) over I-78 and PA 309 | 1988 | 1,677 | Fair |
| SR 4040 (lr 39072) over Switzer Creek | 1930 | 1,641 | Poor |
| Old Route 22 over Mill Creek | 1929 | 1,548 | Fair |
| Church Lane over Norfolk Southern RR | 1930 | 1,500 | Fair |
| SR 2018(LR 39026) over Branch of Swabia Creek | 1929 | 1,400 | Poor |
| SR3001 Chestnut Rd over Swabia Creek | 2010 | 1,390 | Good |
| SR 2047 over S Branch of Saucon Creek | 2010 | 1,389 | Good |
| SR 4022 (lr 39054) over Trout Creek | 1958 | 1,321 | Fair |
| SR 2018(LR 39026) over Trib. to Swabia Creek | 1962 | 1,318 | Good |
| Columbia Street over Coplay Creek | 2000 | 1,300 | Good |
| SR2038(LR 39076) over I-78(LR 1045) | 1989 | 1,286 | Fair |
| SR 4004(LR 39071) over Hassen Creek | 1964 | 1,207 | Poor |
| SR 3004(lr.39022) over Little Lehigh Creek | 1950 | 1,201 | Fair |
| SR 3004(lr.39022) over Toad Creek | 1964 | 1,201 | Fair |
| Auburn Street over Trout Creek | 1978 | 1,200 | Fair |
| SR 4004(LR 39071) over Haasen Creek | 1964 | 1,191 | Fair |
| Center Street over Coplay Creek | 1960 | 1,000 | Fair |
| Church Street over Catasauqua Creek | 1964 | 1,000 | Fair |
| Lehigh Parkway E. over Little Lehigh Creek | 1828 | 1,000 | Poor |
| Main St Ramp over Monacacy Cr.rr Conestoga | 1920 | 1,000 | Fair |
| South Main Street over Monocacy Creek | 1966 | 1,000 | Fair |
| South Tenth Street over Little Lehigh Creek | 1932 | 1,000 | Fair |
| Walnut Street over Catasauqua Creek | 1950 | 1,000 | Fair |
| Walnut Street over Cedar Creek | 1824 | 1,000 | Poor |
| SR 2029(LR 39002) over Indian Creek | 1935 | 999 | Poor |
| SR 2029(lr.39002) over Hosensack Creek | 1941 | 999 | Fair |
| SR 2020 (lr 39007) over Trib. to Saucon Creek | 1940 | 996 | Fair |
| SR 3013(LR 39082) over Mill Creek | 1957 | 983 | Good |
| SR 4009 (LR39057) over Mill Creek | 2012 | 916 | Fair |
| SR 4020 Lr 39116 over Pa Tpk (I-476) | 1956 | 880 | Fair |
| SR 1031(14TH Ave.) over Pa 378 &trib to Monocacy | 1967 | 870 | Fair |
| Camp Meeting Road over Saucon Creek | 2018 | 851 | Good |
| SR 2034 (lr 39010) over Saucon Creek | 1925 | 844 | Fair |
| Hunters Hill Road over Jordan Creek | 2011 | 826 | Good |
| SR 4007 (LR39058) over Jordan Creek | 2014 | 794 | Good |
| Macungie Road over Little Lehigh Creek | 1950 | 750 | Poor |
| SR 4009 (lr 39057) over Jordan Creek | 1876 | 727 | Fair |
| SR 4009 (lr 39057) over Mill Creek | 1912 | 727 | Poor |
| SR 4025 (lr 39064) over Lyon Creek | 1964 | 677 | Fair |
| Chapel Avenue over Trout Run | 1987 | 650 | Fair |
| SR 3007(lr.39098) over Schaefer Run | 1961 | 632 | Fair |
| SR 4019 (lr 39063) over Sweitzer Creek | 1937 | 631 | Poor |
| SR 2025(LR 39005) over Indian Creek | 1933 | 529 | Fair |
| SR 2025(LR 39005) over Indian Creek | 1933 | 529 | Poor |
| SR 2025(LR 39005) over Indian Creek | 1933 | 529 | Fair |
| Business Park Lane over Trib to Lehigh River | 1996 | 500 | Fair |
| Cetronia Road over Iron Run | 2006 | 500 | Good |
| Devonshire Road over Little Lehigh Creek | 1870 | 500 | Poor |
| Mill Creek Road over Little Lehigh Creek | 1967 | 500 | Fair |
| Overhill Road over Little Lehigh Creek | 1931 | 500 | Fair |
| Ramp AB over Pa Tpk (I-476) | 2016 | 500 | Good |
| Riverbend Road over Little Lehigh Creek | 1954 | 500 | Fair |
| St. Elmo Street over Cedar Creek | 1983 | 500 | Fair |
| Wood Street over Catasauqua Creek | 1950 | 500 | Poor |
| Fairmount Street over Trib.to Saucon Creek | 1977 | 410 | Fair |
| SR 4028 (lr 39110) over Branch of Jordan Creek | 1887 | 410 | Fair |
| Ash Lane over Toad Creek | 1966 | 400 | Poor |
| Millrace Road over Little Lehigh Creek | 1960 | 400 | Fair |
| Preston Lane over South Br. Saucon Creek | 1973 | 400 | Fair |
| Wild Cherry Lane over Little Lehigh Creek | 1980 | 400 | Fair |
| Water Street over Coplay Creek | 1941 | 390 | Fair |
| SR 3005 (lr 39021) over Schaefer Run | 1971 | 374 | Fair |
| Pa 863 (lr 39066) over Ontelaunee Creek | 1998 | 370 | Good |
| SR 4025 (lr 39059) over Lyon Creek | 1949 | 351 | Fair |
| SR 4025 (lr 39059) over Lyon Creek | 1949 | 351 | Fair |
| SR 4025 (lr 39059) over Trib. to Lyon Creek | 1949 | 351 | Fair |
| Jordan Road over Haasen Creek | 1996 | 350 | Fair |
| 7TH Street over Trout Creek | 1983 | 300 | Fair |
| Chestnut Hill Road over Saucon Creek | 2000 | 300 | Fair |
| Quarry Street over Coplay Creek | 1920 | 300 | Poor |
| Sumner Ave.extent. over Jordan Creek | 1996 | 300 | Fair |
| SR 863 (lr 39066) over Kistler Creek | 1930 | 277 | Fair |
| SR 4027 (lr 39060) over Jordan Creek | 1961 | 276 | Fair |
| SR 4027 (lr 39060) over Jordan Creek | 1961 | 276 | Poor |
| Grant Street over Trib. to Trout Creek | 2012 | 250 | Fair |
| South Albert St over Trout Creek | 2015 | 250 | Good |
| T-544 Werley Road over Cedar Creek Tributary | 2018 | 250 | Good |
| SR 4014 (lr 39052) over Fells Creek | 1983 | 225 | Fair |
| SR 4014 (lr 39052) over Fells Creek | 1920 | 225 | Fair |
| Furnace Road over Trout Creek | 1935 | 210 | Poor |
| Allemaengel Rd. over Ontelaunee Creek | 1910 | 200 | Poor |
| Coplay Creek Road over Coplay Creek | 1995 | 200 | Good |
| Dylan Drive over Little Cedar Creek | 1999 | 200 | Good |
| Excelsior Road over Coplay Creek | 2003 | 200 | Good |
| Hollenbach Road over Jordan Creek | 1944 | 200 | Fair |
| Jordan Road over Jordan Creek | 1858 | 200 | Poor |
| Keystone Rd over Little Lehigh Creek | 1954 | 200 | Fair |
| Old Packhouse Road over Jordan Creek | 1860 | 200 | Fair |
| South Albert St. over Lehigh Canal | 1940 | 200 | Poor |
| T-383 Cassel Rd over Pa Tpk (I-476) | 1955 | 200 | Good |
| T-471 over Pa Tpk (I-476) | 1955 | 200 | Fair |
| Ulrich Mill Rd over Ontelaunee Creek | 1954 | 200 | Fair |
| Jordan Road over Jordan Creek | 1959 | 190 | Poor |
| SR 4014 (lr 39052) over Fells Creek | 1969 | 174 | Fair |
| SR4025 over Jordan Creek | 2011 | 159 | Good |
| Bear Road over Mill Creek | 2021 | 150 | Good |
| SR 4037 over Ontelaunee Creek | 2012 | 150 | Good |
| Valley Road over Saucon Creek | 1993 | 150 | Good |
| Hickory Lane over Haasen Creek | 2017 | 140 | Good |
| Coplay Creek Rd over Coplay Creek | 1988 | 120 | Fair |
| Portland Street over Coplay Creek | 1991 | 120 | Good |
| Bittners Corner Rd over Jordan Creek | 2019 | 100 | Good |
| Bridge Street over Coplay Creek | 1955 | 100 | Fair |
| Center St. over Trout Creek | 1961 | 100 | Poor |
| Chester Road over Jordan Creek | 1981 | 100 | Fair |
| Church Street over Swabia Creek | 1988 | 100 | Fair |
| Furnace Rd over Trout Creek | 1978 | 100 | Poor |
| Lapp Rd. over Jordan Creek | 1858 | 100 | Fair |
| Narris Road over Switzer Creek | 1980 | 100 | Fair |
| Park Entrance over Little Lehigh Creek | 1941 | 100 | Fair |
| Ross Valley Rd over Switzer Creek | 1950 | 100 | Fair |
| S Main St over Lehigh Canal | 1988 | 100 | Fair |
| SR3008 Cetronia Rd over Detention Pond Overflow | 1997 | 100 | Good |
| Schultz Bridge Rd over Hosensack Creek | 1956 | 100 | Fair |
| South Fifth Street over Trout Creek | 1913 | 100 | Fair |
| Springhouse Road over Ontelaunee Creek | 1834 | 100 | Poor |
| Township Line Road over Haasen Creek | 1977 | 100 | Poor |
| Wehrs Covered over Jordan Creek | 1841 | 100 | Fair |
| Yeakels Mill Road over Perkiomen Creek | 1960 | 100 | Fair |
| Kozy Korner Lane over Saucon Creek | 1990 | 90 | Fair |
| Toll Gate Road over Indian Creek | 1919 | 70 | Poor |
| 2nd Ave Ramp over Krause Ln; West St. | 1921 | 50 | Fair |
| Central Road over Jordan Creek | 1952 | 50 | Fair |
| County Bridge Road over Trout Creek | 1888 | 50 | Poor |
| Gun Club Road over Ontelaunee Creek | 1885 | 50 | Poor |
| Lovers Lane over Trout Creek | 1921 | 50 | Fair |
| Old Village Road over Lyon Creek | 2009 | 50 | Good |
| Rex Road over Jordan Creek | 1940 | 50 | Fair |
| Smith Lane over Little Lehigh Creek | 1970 | 50 | Poor |
| Valley Road over Lyon Creek | 1945 | 50 | Fair |
| Walnut St. over Unnamed Stream | 1939 | 50 | Fair |
| Wood Street over Coplay Creek | 1998 | 50 | Fair |
| Orchard Road over Swabia Creek | 1978 | 20 | Fair |
| Fullers Bridge over Little Lehigh Creek | 1998 | 10 | Fair |