Bridge Replacement Unit Costs 2023

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using converted metric data

NHS POOR (SD) | non-NHS POOR (SD) | NHS and non-NHS POOR (SD)

**ESTIMATED 2023 REPLACEMENT AND REHABILITATION COSTS OF POOR NATIONAL HIGHWAY SYSTEM (NHS) BRIDGES**
State	Total Number of POOR NHS Bridges 2023*	Total Area of POOR NHS Bridges 2023 (ft²)*	Replacement Unit Costs of NHS Bridges (dollars/ft²)				Estimated 2023 Total Costs (dollars) Assuming Replacement of Total Number of POOR NHS Bridges	Estimated 2023 Total Costs (dollars) Assuming Rehabilitation of Total Number of POOR NHS Bridges (Rehabilitation cost = 68% of Replacement cost)
State	Total Number of POOR NHS Bridges 2023*	Total Area of POOR NHS Bridges 2023 (ft²)*	2021 Costs Collected in 2022	2022 Costs Collected in 2023	2023 Costs Collected in 2024	Cost Used For 2023 Estimates**
Alabama	35	292,066	147	201	186	178	51,987,665	35,351,612
Alaska	21	302,658	205	339	611	385	116,523,312	79,235,852
Arizona	13	307,445	236	310	206	251	77,066,166	52,404,993
Arkansas	61	1,163,229		358		358	416,435,863	283,176,387
California	538	15,830,737	277	314	490	360	5,704,342,261	3,878,952,737
Colorado	109	1,180,696			312	312	368,377,169	250,496,475
Connecticut	47	1,949,340	821		643	732	1,426,917,079	970,303,613
Delaware	1	226,470				377	85,379,124	58,057,804
District Of Columbia	4	354,467				377	133,634,108	90,871,194
Florida	33	863,078	253	217	314	261	225,550,987	153,374,671
Georgia	14	494,474	149	180	213	181	89,334,939	60,747,759
Hawaii	33	272,883	1,955			1,955	533,486,070	362,770,527
Idaho	20	196,638	287	331	245	288	56,566,272	38,465,065
Illinois	390	8,335,169	227	275	302	268	2,233,825,366	1,519,001,249
Indiana	48	815,630	151	226	225	201	163,669,762	111,295,438
Iowa	17	732,829	119	162	141	141	103,084,650	70,097,562
Kansas	24	904,220	122	294	265	227	205,258,043	139,575,469
Kentucky	41	1,213,815	151	193	149	164	199,470,292	135,639,798
Louisiana	120	4,659,179	238	207		223	1,036,667,230	704,933,717
Maine	47	409,219	580	550	553	561	229,571,782	156,108,812
Maryland	30	898,930		548	857	703	631,497,987	429,418,631
Massachusetts	206	3,455,641	472		607	540	1,864,318,365	1,267,736,488
Michigan	223	2,763,902	331	394	355	360	995,004,832	676,603,286
Minnesota	51	1,667,257	220	240	208	223	371,242,500	252,444,900
Mississippi	37	704,102	152	161	369	227	160,065,875	108,844,795
Missouri	150	3,680,624	124	174	178	159	583,992,371	397,114,812
Montana	43	498,056	223	169	195	196	97,452,975	66,268,023
Nebraska	38	350,689	175		130	153	53,480,035	36,366,424
Nevada	5	79,092	241			241	19,061,130	12,961,569
New Hampshire	26	326,043				377	122,918,155	83,584,345
New Jersey	155	3,855,193	532	821	822	725	2,795,014,623	1,900,609,944
New Mexico	31	318,684	370	873		622	198,062,267	134,682,341
New York	337	11,044,990	611	352	1,306	756	8,353,694,120	5,680,512,002
North Carolina	128	1,690,541	246	221	256	241	407,420,456	277,045,910
North Dakota	12	143,744		180	356	268	38,523,353	26,195,880
Ohio	71	1,490,998	251	222	280	251	374,240,568	254,483,586
Oklahoma	14	232,562	147	279	204	210	48,838,004	33,209,843
Oregon	27	604,273	287	459	667	471	284,612,778	193,536,689
Pennsylvania	261	3,340,320	279	456	415	383	1,280,456,042	870,710,108
Rhode Island	51	894,735	353	594	693	547	489,121,625	332,602,705
South Carolina	75	1,970,886	172	210	198	193	381,037,925	259,105,789
South Dakota	19	385,960	209	280	378	289	111,542,412	75,848,840
Tennessee	153	2,778,803	147	226	252	208	578,917,207	393,663,701
Texas	88	3,962,312	72	87	114	91	360,570,415	245,187,882
Utah	7	169,483	325		292	309	52,285,489	35,554,133
Vermont	12	157,777		366	599	483	76,127,242	51,766,524
Virginia	73	2,025,991	549	504	501	518	1,049,463,246	713,635,007
Washington	149	4,498,579	275			275	1,237,109,176	841,234,240
West Virginia	185	3,664,363	239	320	279	279	1,023,578,824	696,033,600
Wisconsin	68	992,367	137	143	147	142	141,246,958	96,047,932
Wyoming	44	349,607	191		282	237	82,682,023	56,223,776
Puerto Rico	71	1,583,894				377	597,128,066	406,047,085
Totals	4,456	101,084,639			377		38,317,855,186	26,056,141,526

* Year of the National Bridge Inventory data set used is the 2023 archive, see https://www.fhwa.dot.gov/bridge/nbi/condition.cfm

Effective with the enactment of the Bipartisian Infrastructure Law (BIL), the term Structurally Deficient is no longer used to classify bridge conditions. See https://www.fhwa.dot.gov/bridge/britab.cfm
All area measurements are in Square Feet, and are calculated in accordance with the Bridge Deck Area definition found on this page: https://www.fhwa.dot.gov/bridge/britab.cfm
Square Meters is Converted to Square Feet by multiplying by 10.764

** Costs used for estimates is determined by averaging the current and the previous 2 years of submitted Replacement Unit Costs of NHS Bridges.

When cost data is not submitted for a particular year in the 3 year period, an average of the costs submitted is used.
When no cost data is submitted for the entire 3 year period, the National Average of the Costs Collected for the current year is used.
Blank means no cost data was submitted for the particular year.
Bridge construction costs may vary year to year. To minimize this variation, an average unit cost is used as it is a good measure of central tendency.
- The use of average unit costs has historically been done for calculating the Highway Bridge Program apportionments.
National Average of the costs collected to replace NHS bridges is $377/ft²
- National Average = Average of all the costs in column '2023 Costs Collected in 2024'.

FHWA initiated the collection of Replacement Unit Costs of NHS and non-NHS Bridges in 2012 as is required under MAP-21.

Collection of costs related to bridge construction is required by the National Bridge and Tunnel Inventory and Inspection Standards (23 U.S.C. 144(b)(5))

**ESTIMATED 2023 REPLACEMENT AND REHABILITATION COSTS OF POOR NON-NATIONAL HIGHWAY SYSTEM (non-NHS) BRIDGES**
State	Total Number of POOR non-NHS Bridges 2023*	Total Area of POOR non-NHS Bridges 2023 (ft²)*	Replacement Unit Costs of non-NHS Bridges (dollars/ft²)				Estimated 2023 Total Costs (dollars) Assuming Replacement of Total Number of POOR non-NHS Bridges	Estimated 2023 Total Costs (dollars) Assuming Rehabilitation of Total Number of POOR non-NHS Bridges (Rehabilitation cost = 68% of Replacement cost)
State	Total Number of POOR non-NHS Bridges 2023*	Total Area of POOR non-NHS Bridges 2023 (ft²)*	2021 Costs Collected in 2022	2022 Costs Collected in 2023	2023 Costs Collected in 2024	Cost Used For 2023 Estimates**
Alabama	524	1,111,466	127	145	239	170	189,319,762	128,737,438
Alaska	115	320,207	491		723	607	194,365,674	132,168,658
Arizona	82	385,385	257	263	377	299	115,230,147	78,356,500
Arkansas	636	2,527,162	191	300	340	277	700,023,759	476,016,156
California	1,053	6,803,043	426	497	474	466	3,167,950,377	2,154,206,257
Colorado	328	933,190	235		343	289	269,691,828	183,390,443
Connecticut	172	599,028	643	684	768	698	418,321,302	284,458,485
Delaware	10	51,381				398	20,449,632	13,905,750
District Of Columbia	0	0				398	0	0
Florida	416	2,208,112	139	257	341	246	542,459,488	368,872,452
Georgia	225	600,943	156	186	219	187	112,376,267	76,415,861
Hawaii	47	201,727	529			529	106,713,836	72,565,408
Idaho	215	513,245	290	287	315	297	152,604,834	103,771,287
Illinois	2,082	8,556,798	213	263	272	249	2,133,494,885	1,450,776,522
Indiana	970	2,103,427	177	224	235	212	445,926,441	303,229,980
Iowa	4,541	8,990,819	125	140	140	135	1,213,760,528	825,357,159
Kansas	1,281	2,235,095	144	170	215	176	394,121,691	268,002,750
Kentucky	971	2,278,956	170	227	312	236	538,593,221	366,243,390
Louisiana	1,425	6,722,435	167	211	375	251	1,687,331,212	1,147,385,224
Maine	325	1,007,357	267	393	610	423	426,447,665	289,984,413
Maryland	222	733,566	379	407	665	484	354,801,660	241,265,129
Massachusetts	244	1,358,685	623	635	807	688	935,227,979	635,955,026
Michigan	1,069	2,815,932	281	392	354	342	963,987,329	655,511,384
Minnesota	531	2,159,542	155	205	186	182	393,036,708	267,264,962
Mississippi	1,016	2,648,197	182	198	191	190	504,040,113	342,747,277
Missouri	2,063	5,620,724	134	179	188	167	938,660,853	638,289,380
Montana	315	923,045	234	288	236	253	233,222,723	158,591,451
Nebraska	1,175	1,893,612	264	267		266	502,754,080	341,872,774
Nevada	20	80,607	272			272	21,925,007	14,909,005
New Hampshire	167	505,474	521		1,286	904	456,695,949	310,553,246
New Jersey	287	1,470,036		775		775	1,139,277,677	774,708,821
New Mexico	170	699,596	269	531	444	415	290,099,301	197,267,525
New York	1,241	4,069,708	307	535	479	440	1,792,027,954	1,218,579,009
North Carolina	1,208	5,118,232	139	191	219	183	936,636,466	636,912,797
North Dakota	443	603,229	189	187	342	239	144,372,855	98,173,541
Ohio	1,180	3,773,424	196	245	274	238	899,332,712	611,546,244
Oklahoma	1,801	3,333,423	131	166	171	156	520,014,033	353,609,543
Oregon	374	1,211,729	343	288	503	378	458,033,477	311,462,764
Pennsylvania	2,761	5,793,608	363	406	456	408	2,365,723,151	1,608,691,743
Rhode Island	69	343,093	1,309	660	904	958	328,569,065	223,426,964
South Carolina	452	2,143,868	124	182		153	328,011,793	223,048,019
South Dakota	966	1,546,308	227	257	341	275	425,234,705	289,159,599
Tennessee	745	2,769,399	132	150	194	159	439,411,283	298,799,672
Texas	620	2,948,524	103	111	122	112	330,234,696	224,559,593
Utah	68	151,118	187	477	481	382	57,676,766	39,220,201
Vermont	63	246,183	487	537	553	526	129,410,091	87,998,862
Virginia	425	1,430,444	479	442	507	476	680,891,343	463,006,113
Washington	307	1,406,015	273	261	420	318	447,112,870	304,036,752
West Virginia	1,257	2,715,505	258	262	335	285	773,918,986	526,264,911
Wisconsin	875	2,328,277	128	164	166	153	355,450,336	241,706,229
Wyoming	160	661,858	164	265	389	273	180,466,736	122,717,381
Puerto Rico	223	728,417	340	197		269	195,579,963	132,994,375
Totals	37,935	112,381,153			398		31,351,021,212	21,318,694,424

* Year of the National Bridge Inventory data set used is the 2023 archive, see https://www.fhwa.dot.gov/bridge/nbi/condition.cfm

Effective with the enactment of the Bipartisian Infrastructure Law (BIL), the term Structurally Deficient is no longer used to classify bridge conditions. See https://www.fhwa.dot.gov/bridge/britab.cfm
All area measurements are in Square Feet, and are calculated in accordance with the Bridge Deck Area definition found on this page: https://www.fhwa.dot.gov/bridge/britab.cfm
Square Meters is Converted to Square Feet by multiplying by 10.764

** Costs used for estimates is determined by averaging the current and the previous 2 years of submitted Replacement Unit Costs of non-NHS Bridges.

When cost data is not submitted for a particular year in the 3 year period, an average of the costs submitted is used.
When no cost data is submitted for the entire 3 year period, the National Average of the Costs Collected for the current year is used.
Blank means no cost data was submitted for the particular year.
Bridge construction costs may vary year to year. To minimize this variation, an average unit cost is used as it is a good measure of central tendency.
- The use of average unit costs has historically been done for calculating the Highway Bridge Program apportionments.
National Average of the costs collected to replace non-NHS bridges is $398/ft²
- National Average = Average of all the costs in column '2023 Costs Collected in 2024'.

FHWA initiated the collection of Replacement Unit Costs of NHS and non-NHS Bridges in 2012 as is required under MAP-21.

Collection of costs related to bridge construction is required by the National Bridge and Tunnel Inventory and Inspection Standards (23 U.S.C. 144(b)(5))

ESTIMATED 2023 REPLACEMENT AND REHABILITATION COSTS OF POOR NATIONAL HIGHWAY SYSTEM (NHS)
and NON-NATIONAL HIGHWAY SYSTEM (non-NHS) BRIDGES
State	Total Number of POOR NHS and non-NHS Bridges 2023*	Total Area of POOR NHS and non-NHS Bridges 2023 (ft²) *	Estimated 2023 Total Costs (dollars) Assuming Replacement of Total Number of POOR NHS and non-NHS Bridges	Estimated 2023 Total Costs (dollars) Assuming Rehabilitation of Total Number of POOR NHS and non-NHS Bridges (Rehabilitation cost = 68% of Replacement cost)
Alabama	559	1,403,532	241,307,427	164,089,050
Alaska	136	622,865	310,888,986	211,404,511
Arizona	95	692,830	192,296,313	130,761,493
Arkansas	697	3,690,390	1,116,459,622	759,192,543
California	1,591	22,633,780	8,872,292,638	6,033,158,994
Colorado	437	2,113,886	638,068,997	433,886,918
Connecticut	219	2,548,368	1,845,238,381	1,254,762,099
Delaware	11	277,851	105,828,756	71,963,554
District Of Columbia	4	354,467	133,634,108	90,871,194
Florida	449	3,071,190	768,010,475	522,247,123
Georgia	239	1,095,416	201,711,206	137,163,620
Hawaii	80	474,610	640,199,906	435,335,936
Idaho	235	709,883	209,171,107	142,236,352
Illinois	2,472	16,891,967	4,367,320,251	2,969,777,771
Indiana	1,018	2,919,057	609,596,203	414,525,418
Iowa	4,558	9,723,648	1,316,845,178	895,454,721
Kansas	1,305	3,139,315	599,379,734	407,578,219
Kentucky	1,012	3,492,771	738,063,513	501,883,189
Louisiana	1,545	11,381,614	2,723,998,442	1,852,318,941
Maine	372	1,416,576	656,019,448	446,093,224
Maryland	252	1,632,496	986,299,647	670,683,760
Massachusetts	450	4,814,326	2,799,546,344	1,903,691,514
Michigan	1,292	5,579,834	1,958,992,161	1,332,114,670
Minnesota	582	3,826,799	764,279,208	519,709,861
Mississippi	1,053	3,352,299	664,105,987	451,592,071
Missouri	2,213	9,301,348	1,522,653,223	1,035,404,192
Montana	358	1,421,101	330,675,698	224,859,475
Nebraska	1,213	2,244,301	556,234,114	378,239,198
Nevada	25	159,698	40,986,138	27,870,574
New Hampshire	193	831,517	579,614,105	394,137,591
New Jersey	442	5,325,228	3,934,292,300	2,675,318,764
New Mexico	201	1,018,281	488,161,567	331,949,866
New York	1,578	15,114,698	10,145,722,074	6,899,091,011
North Carolina	1,336	6,808,773	1,344,056,922	913,958,707
North Dakota	455	746,973	182,896,208	124,369,422
Ohio	1,251	5,264,422	1,273,573,280	866,029,830
Oklahoma	1,815	3,565,985	568,852,038	386,819,386
Oregon	401	1,816,002	742,646,255	504,999,454
Pennsylvania	3,022	9,133,928	3,646,179,193	2,479,401,851
Rhode Island	120	1,237,828	817,690,691	556,029,670
South Carolina	527	4,114,754	709,049,717	482,153,808
South Dakota	985	1,932,268	536,777,117	365,008,440
Tennessee	898	5,548,201	1,018,328,490	692,463,373
Texas	708	6,910,836	690,805,111	469,747,475
Utah	75	320,601	109,962,255	74,774,334
Vermont	75	403,959	205,537,333	139,765,386
Virginia	498	3,456,435	1,730,354,590	1,176,641,121
Washington	456	5,904,594	1,684,222,046	1,145,270,992
West Virginia	1,442	6,379,869	1,797,497,810	1,222,298,511
Wisconsin	943	3,320,645	496,697,295	337,754,160
Wyoming	204	1,011,465	263,148,759	178,941,156
Puerto Rico	294	2,312,311	792,708,030	539,041,460
Totals	42,391	213,465,792	69,668,876,398	47,374,835,951

* Year of the National Bridge Inventory data set used is the 2023 archive, see https://www.fhwa.dot.gov/bridge/nbi/condition.cfm

Effective with the enactment of the Bipartisian Infrastructure Law (BIL), the term Structurally Deficient is no longer used to classify bridge conditions. See https://www.fhwa.dot.gov/bridge/britab.cfm
All area measurements are in Square Feet, and are calculated in accordance with the Bridge Deck Area definition found on this page: https://www.fhwa.dot.gov/bridge/britab.cfm
Square Meters is Converted to Square Feet by multiplying by 10.764

FHWA initiated the collection of Replacement Unit Costs of NHS and non-NHS Bridges in 2012 as is required under MAP-21.

Collection of costs related to bridge construction is required by the National Bridge and Tunnel Inventory and Inspection Standards (23 U.S.C. 144(b)(5))

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Bridge Replacement Unit Costs 2023

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