Bridges in Louisiana

12,684Total Bridges

4,802Good

6,459Fair

1,423Poor

Bridge Conditions in Louisiana

Louisiana has 12,684 bridges tracked in the National Bridge Inventory. Of these, 1,423 (11%) are rated as poor condition — meaning at least one major component has significant deterioration. The average bridge in Louisiana is 43 years old.

Louisiana Bridge Facts

Total Bridges	12,684
Good Condition	4,802
Fair Condition	6,459
Poor Condition	1,423
Average Bridge Age	43 years
Longest Bridge	127269.0 ft

Longest Bridges in Louisiana

Cswy Bridge N. B. over Lake Pontchartrain127269.0 ftFair Causeway SB over Lake Pontchartrain127200.1 ftFair I0055 over I-10 & US 51 & Swamp76713.9 ftGood I0055 over US 51 & Swamp75831.0 ftFair I0010 over Bonnet Carre Spillway50814.0 ftFair

Counties in Louisiana

Acadia280 bridges23 poor Allen178 bridges22 poor Ascension216 bridges26 poor Assumption68 bridges9 poor Avoyelles150 bridges26 poor Beauregard221 bridges23 poor Bienville190 bridges53 poor Bossier269 bridges41 poor Caddo683 bridges45 poor Calcasieu462 bridges39 poor Caldwell124 bridges12 poor Cameron58 bridges14 poor Catahoula69 bridges4 poor Claiborne148 bridges33 poor Concordia42 bridges6 poor De Soto201 bridges15 poor East Baton Rouge549 bridges103 poor East Carroll55 bridges9 poor East Feliciana131 bridges31 poor Evangeline155 bridges10 poor Franklin130 bridges5 poor Grant209 bridges30 poor Iberia142 bridges15 poor Iberville80 bridges10 poor Jackson163 bridges13 poor Jefferson381 bridges16 poor Jefferson Davis242 bridges45 poor La Salle195 bridges12 poor Lafayette319 bridges25 poor Lafourche130 bridges20 poor Lincoln171 bridges22 poor Livingston251 bridges19 poor Madison104 bridges7 poor Morehouse136 bridges19 poor Natchitoches320 bridges46 poor Orleans381 bridges41 poor Ouachita331 bridges42 poor Plaquemines35 bridges7 poor Pointe Coupee51 bridges11 poor Rapides524 bridges34 poor Red River61 bridges16 poor Richland204 bridges20 poor Sabine195 bridges22 poor St. Bernard47 bridges3 poor St. Charles82 bridges1 poor St. Helena139 bridges12 poor St. James26 bridges1 poor St. John the Baptist40 bridges1 poor St. Landry316 bridges28 poor St. Martin117 bridges10 poor St. Mary124 bridges9 poor St. Tammany361 bridges18 poor Tangipahoa477 bridges59 poor Tensas52 bridges2 poor Terrebonne214 bridges22 poor Union121 bridges13 poor Vermilion260 bridges26 poor Vernon337 bridges28 poor Washington285 bridges29 poor Webster194 bridges48 poor West Baton Rouge72 bridges10 poor West Carroll88 bridges6 poor West Feliciana108 bridges18 poor Winn220 bridges38 poor

Poor Condition Bridges in Louisiana

Bridge	County	Length	Traffic	Year
Us0090-b over Mississippi River	Orleans	3019.0 ft	154,311	1985
I0010 over Service RD & Upt R/r	Orleans	1334.0 ft	154,311	1960
I0010 over Vet Mem HWY	Jefferson	2620.1 ft	137,542	1967
I0020 over M.p. Rr	Caddo	412.1 ft	98,318	1965
I0020 over M.p. Rr	Caddo	412.1 ft	98,318	1965
I0020 over Lk Shore Dr&kesrr	Caddo	801.8 ft	98,318	1965
I0020 over Lk Shore Dr&kcsrr	Caddo	819.9 ft	98,318	1965
I0020 over Marshall St/la 1/rrs.	Caddo	1836.9 ft	98,318	1965
I0020 over On Ramp To I-20 Wbl	Caddo	1237.9 ft	87,567	1980
I0020 over I-20 Ramp W-n I-20 Mkt S	Caddo	1481.0 ft	87,567	1985
I0020 over Marshall St&la&kci-20	Caddo	814.0 ft	87,567	1965
I0010 over Sabine Relief	Calcasieu	722.1 ft	86,969	1954
I0010 over Calcasieu River Rr Sts	Calcasieu	6617.1 ft	86,600	1952
I0020 over St. Louis & SW Rr	Caddo	365.2 ft	84,672	1965
I0010 over La 385	Calcasieu	574.1 ft	73,488	1961
I0020 over Stl&sw-kcs Rr/westerfiel	Bossier	648.0 ft	69,892	1966
I0010 over I0049/us0167	Lafayette	234.9 ft	56,748	1968
La3046 over R/r City Streets La 611	Jefferson	2321.9 ft	55,994	1957
I0020 over Creek	Lincoln	50.9 ft	50,895	1963
I0010 over I-610 & I-10	Orleans	2285.1 ft	49,634	1963
La0039 over Inner Harbor Nav Canal	Orleans	1535.1 ft	47,739	1957
La0039 over Rr Canal	St. Bernard	27.9 ft	47,739	1991
Palmetto ST Onramp over Kcs Rr	Orleans	682.1 ft	47,738	1960
I0020 over Stl&sw-kcs Rr/westerfiel	Bossier	648.0 ft	45,300	1966
Us0190 over Creek	East Baton Rouge	24.0 ft	44,391	1960
I0010 over Vet Mem HWY	Jefferson	2259.8 ft	41,695	1967
I0010 over La 415	West Baton Rouge	962.9 ft	41,644	1969
I0020 over Crows CR Relief	Bienville	160.1 ft	37,514	1960
I0020 over Bear Creek	Bienville	174.9 ft	37,514	1964
La0039 over N O P B Rr(claiborne AVE	Orleans	1175.9 ft	36,993	1949
I0020 over Youngs Bayou	Ouachita	140.1 ft	31,285	1965
La0617 over I-20	Ouachita	391.1 ft	31,200	1986
Us0165 over Youngs Bayou	Ouachita	120.1 ft	29,759	1966
Johnston Street over Coulee Mine Br	Lafayette	80.1 ft	29,320	1958
Us0061 over La 73 North	East Baton Rouge	319.9 ft	29,303	1953
La0511 over Red R. C.fant PKWY Ar Te	Bossier	2823.2 ft	28,999	1968
Us0190 over Us190b/la21/bouge Falaya	St. Tammany	1129.9 ft	28,900	1958
Unnamed RD over I-10	Orleans	1378.9 ft	28,550	1969
Unnamed RD over I-10	Orleans	1479.0 ft	28,550	1969
I0010 over US 165 Frontage RD Rr	Jefferson Davis	742.1 ft	27,700	1964
Us0167 over Coulee Mine	Lafayette	120.1 ft	27,213	1958
S Broad ST over I-10; Rr; Sts	Orleans	2588.9 ft	27,209	1951
Us0190 over US 61-scenic	East Baton Rouge	200.1 ft	26,376	1940
La0001 over Port Allen Canal	West Baton Rouge	2469.2 ft	25,347	1960
La0001 over Mo Pacific Rr	West Baton Rouge	1392.1 ft	25,347	1952
W. Metairie AVE over Suburban Canal	Jefferson	57.1 ft	24,900	1968
I0049 over Bayou Clear Div. Canal	Rapides	279.9 ft	24,080	1990
La0047 over Bayou Bienvenue	Orleans	299.9 ft	23,365	1973
I0020 over Us71&kcsrr	Bossier	544.0 ft	23,105	1966
La0046 over No Public Belt R/r	Orleans	51.8 ft	23,049	1960
La0046 over Sister Street	Orleans	51.8 ft	23,049	1960
St. Claude /la 46 over Industrial Canal	Orleans	137.1 ft	23,049	1950
Almonaster AVE over City Street/railroad	Orleans	874.0 ft	22,680	1991
Us0167 over I-20	Lincoln	292.0 ft	22,345	1960
Linwood AVE over Kcs Mopac & Pac Rrs	Caddo	709.0 ft	22,308	1950
Us0190 over Uprr/ Acadia Prep Cir	St. Landry	407.2 ft	20,176	1962
La0020 over Drainage Canal	Lafourche	38.1 ft	20,091	1968
La0014-b over Vermilion R/abbeville	Vermilion	353.0 ft	19,800	1964
La0037 over US 61	East Baton Rouge	211.9 ft	19,515	1968
Plank Road over Hurricane Creek	East Baton Rouge	28.9 ft	19,417	1956
Us0061 over I-10	Orleans	1441.9 ft	19,200	1940
Us0190 over Mississippi River	East Baton Rouge	5878.9 ft	18,380	1939
I0049 over Bayou Derbonne	Natchitoches	49.9 ft	18,305	1986
I0049 over Bayou Lacarp	Natchitoches	42.0 ft	18,305	1986
Us0190 over Drain	Beauregard	29.9 ft	18,056	1964
Us0165 over Pine Bayou	Ouachita	80.1 ft	17,565	1963
Us0071 over Cross Bayou	Caddo	495.1 ft	17,247	1966
Us0171 over Buchanan Bayou	Caddo	120.1 ft	16,911	1953
La3094 over Cross Bayou	Caddo	450.1 ft	16,911	1960
S Campus DR over Corporation Canal	East Baton Rouge	96.1 ft	16,457	1955
Us0051 over Yellow Water River	Tangipahoa	120.1 ft	16,234	1953
I0020 over Macks Bayou	Bossier	217.8 ft	15,642	1967
Us0080 over Alligator Bayou	Bossier	80.1 ft	15,627	1955
Us0011 over No&ne Railroad	St. Tammany	828.1 ft	15,607	1937
La0001 over Kcs Rr/jones ST	Caddo	1899.0 ft	15,401	1954
La0006 over Red River @ Grand Ecore	Natchitoches	1878.9 ft	15,363	1959
La0027 over I-10	Calcasieu	279.9 ft	14,973	1962
La0027 over Dinde Bayou	Calcasieu	113.8 ft	14,973	1960
La0378 over W Fork Calcasieu River	Calcasieu	624.0 ft	14,767	1968
Us0190 over Atchafalaya Fldwy	St. Landry	3983.9 ft	14,088	1961
La3094 over Kansas City Southern Rr	Caddo	248.0 ft	14,003	1977
La3094 over Cross Bayou	Caddo	450.1 ft	14,003	1960
La3094 over Twelve Mile Bayou	Caddo	571.9 ft	14,003	1968
N. Hollywood RD over Drain Canal	Terrebonne	54.1 ft	13,934	1965
I0049 over La0010	St. Landry	521.0 ft	13,540	1989
La0042 over Amite River @ Pvincent	Livingston	398.0 ft	13,122	1963
La3185 over Drain Canal	Lafourche	38.1 ft	12,957	1969
La0182 over Atchaf.r/berwick Bay	St. Mary	3746.1 ft	12,788	1933
La0594 over I-20	Ouachita	464.9 ft	12,786	1965
S. Flannery RD over Lively Bayou	East Baton Rouge	96.1 ft	12,710	1965
Us0190 over US 61-scenic	East Baton Rouge	200.1 ft	12,262	1940
Us0190 over La 415/m P Rr @ Lobdell	West Baton Rouge	995.1 ft	12,262	1940
Us0090 over New Iberia Southern Cana	Iberia	120.1 ft	12,192	1999
I0049 over B Clear Diversion Canal	Rapides	279.9 ft	11,969	1990
Us0080 over Kcs Rr	Caddo	131.9 ft	11,856	1927
Us0167 over Mosley Mill Creek	Grant	57.1 ft	11,712	1975
Us0167 over Bear Creek	Grant	133.9 ft	11,712	1975
La0544 over Cypress Creek	Lincoln	134.8 ft	11,636	1961
La0544 over I-20	Lincoln	240.2 ft	11,636	1963
I0010 over US 165 Frontage RD Rr	Jefferson Davis	722.1 ft	11,635	1964