The document summarizes bridge data from Maryland's 2013 National Bridge Inventory. Some key points: - 6% of Maryland's 5,291 bridges, or 333 bridges, are structurally deficient. - 21% of bridges, or 1,085 bridges, are functionally obsolete. - Between 2003-2012, $1.1 billion in federal funding supported construction of 1,198 bridges in Maryland. - The state estimates it would cost $1.6 billion to repair 1,601 deficient bridges.

1. © 2014 The American Road & Transportation Builders Association (ARTBA). All rights reserved. No part of this document may be reproduced or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of
ARTBA.
Highlights from FHWA’s 2013 National Bridge Inventory Data:
 Of the 5,291 bridges in the state, 333 bridges, or 6% are classified as structurally deficient. This
means one or more of the key bridge elements, such as the deck, superstructure or
substructure, is considered to be in “poor” or worse condition.1
 There are 1,085 bridges, or 21% of all state bridges, classified as functionally obsolete. This
means the bridge does not meet design standards that are in line with current practice.
 Federal-aid investment in Maryland has supported $1.1 billion in bridge construction spending
on 1,198 bridges between 2003 and 2012, according to FHWA data.2
 Since 2004, 384 new bridges have been constructed in the state and 150 bridges have
undergone major reconstruction.
 The state estimates that it would cost approximately $1.6 billion to fix a total of 1,601 bridges in
the state.3
Bridge Inventory:
All Bridges Structurally deficient Bridges
Type of Bridge Total
Number
Area (sq.
meters)
Daily
Crossings
Total
Number
Area (sq.
meters)
Daily
Crossings
Rural Bridges
Interstate 185 213,980 8,829,983 3 3,071 122,790
Other principal arterial 175 301,484 4,654,879 4 2,866 81,030
Minor arterial 191 111,807 1,604,241 8 2,426 62,398
Major collector 350 146,175 1,454,264 24 8,295 85,549
Minor collector 479 112,582 993,329 31 5,864 56,366
Local 1,012 172,795 1,802,805 113 12,006 50,204
Urban Bridges
Interstate 703 1,767,699 55,409,236 19 48,908 2,269,895
Other freeway 418 797,918 20,065,816 8 7,029 366,268
Principal arterial 459 650,038 12,427,210 28 42,483 725,396
Minor arterial 324 296,635 4,611,032 16 13,521 174,382
Collector 299 177,290 2,108,524 18 3,088 133,051
Local 696 334,812 5,707,716 61 35,643 432,483
Not classified 0 0 0 0 0 0
Total 5,291 5,083,217 119,669,035 333 185,200 4,559,812
1
According to the Federal Highway Administration (FHWA), a bridge is classified as structurally deficient if the condition rating for the deck,
superstructure, substructure or culvert and retaining walls is rated 4 or below or if the bridge receives an appraisal rating of 2 or less for
structural condition or waterway adequacy. During inspections, the condition of a variety of bridge elements are rated on a scale of 0 (failed
condition) to 9 (excellent condition). A rating of 4 is considered “poor” condition and the individual element displays signs of advanced section
loss, deterioration, spalling or scour.
2
ARTBA analysis of FHWA data, includes all bridge construction related spending on projects approved by FHWA between 2003 and 2012.
3
This data is provided by bridge owners as part of the FHWA data and is required for any bridge eligible for the Highway Bridge Replacement
and Rehabilitation Program. However, for some states this amount is very low and likely not an accurate reflection of current costs.
State Bridge Profile
Maryland

2. © 2014 The American Road & Transportation Builders Association (ARTBA). All rights reserved. No part of this document may be reproduced or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of
ARTBA.
Proposed bridge work:
Type of Work Number Cost (millions) Daily Crossings Area (sq. meters)
Bridge replacement 384 $425.5 8,411,376 334,502
Widening & rehabilitation 223 $118.1 3,023,692 199,714
Rehabilitation 576 $431.8 14,916,254 655,263
Deck rehabilitation/replacement 24 $611.4 342,306 172,546
Other work 394 $61.4 4,845,924 471,710
Top 10 Most Traveled Structurally Deficient Bridges in the State
County Year
Built
Daily
Crossings
Type of Bridge Location
(route/water under the bridge, traffic on the bridge and location)
Baltimore 1957 192,702 Urban Interstate US 1 AMTRAK LEEDS AVE, IS 695 IL, 0.77 MILE NORTH OF IS
95
Baltimore 1957 192,302 Urban Interstate MD 372, IS 695 IL, 0.96 MILE NORTH OF US 1
Baltimore 1961 189,237 Urban Interstate MILFORD MILL ROAD, IS 695, 0.74 MILE NORTH OF MD 26
Howard 1970 187,920 Urban Interstate MD 32 WBR, IS 95 NB, 0.14 M S OF GUILFORD ROAD
Prince
George's
1963 185,190 Urban Interstate SUITLAND PARKWAY, IS 95 IL, 0.79 MILE SOUTH OF MD 4
Prince
George's
1963 185,190 Urban Interstate SUITLAND PARKWAY, IS 95 OL, 0.79 MILE SOUTH OF MD 4
Prince
George's
1963 177,270 Urban Interstate SUITLAND ROAD, IS 95 OL, 1.71 MILES SOUTH OF MD 4
Prince
George's
1963 177,270 Urban Interstate SUITLAND ROAD, IS 95 IL, 1.71 MILES SOUTH OF MD 4
Prince
George's
1963 143,828 Urban Interstate MD 414, IS 95/495, 1.56 MILES N OF MD 210
Howard 1970 91,311 Urban
freeway/expressway
IS 95 SBR, MD 32 EB, 1.74 MILES NORTH OF US 1
Sources: All data is from the 2013 National Bridge Inventory, released by the Federal Highway Administration in March 2014.
Note that specific conditions on bridge may have changed as a result of recent work. Cost estimates of bridge work provided as
part of the data and have been adjusted to 2013$ for inflation and estimated project costs. Contract awards data is for state
and local government awards and comes from McGraw Hill. Note that additional bridge investment may be a part of other
contract awards if a smaller bridge project is included with a highway project, and that would not be accounted for in the total
in this profile.