State Bridge Profile Michigan 2014

1. © 2015 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 2014 National Bridge Inventory Data:
 Of the 11,072 bridges in the state, 1,295 bridges, or 12% 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 1,754 bridges, or 16% of all state bridges, classified as functionally obsolete. This
means the bridge does not meet design standards that are in line with current practice.
 State and local contract awards for bridge construction totaled $1.32 billion over the past five
years, 22 percent of highway and bridge contract awards, compared to a national average of 29
percent.
 Since 2004, 893 new bridges have been constructed in the state and 684 bridges have
undergone major reconstruction.
 The state estimates that it would cost approximately $7.2 billion to fix a total of 2,003 bridges in
the state.2
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 387 353,956 7,087,925 19 12,473 456,115
Other principal arterial 613 376,683 5,218,464 30 15,023 246,638
Minor arterial 609 294,624 3,193,932 50 26,578 232,907
Major collector 2,086 669,009 4,498,851 298 68,081 564,825
Minor collector 537 128,417 1,519,745 69 12,323 467,860
Local 3,143 528,862 1,543,306 520 54,358 156,740
Urban Bridges
Interstate 827 1,398,777 29,876,359 57 207,714 2,258,140
Other freeway 316 333,304 7,989,428 18 19,326 270,189
Principal arterial 697 852,574 15,400,875 46 50,836 768,243
Minor arterial 811 744,334 9,860,960 92 56,688 1,143,416
Collector 470 297,241 3,613,205 38 19,175 177,484
Rural 576 314,090 2,955,826 58 20,854 240,394
Total 11,072 6,291,870 92,758,876 1,295 563,429 6,982,951
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
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
Michigan

2. © 2015 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 760 $4,887.6 2,028,898 149,329
Widening & rehabilitation 77 $34.7 1,293,916 43,901
Rehabilitation 176 $1,122.1 760,283 74,553
Deck rehabilitation/replacement 794 $935.8 10,057,666 809,447
Other work 196 $235.0 432,439 81,942
Top 10 Most Traveled Structurally Deficient Bridges in the State:
County
Year
Built
Daily
Crossings
Type of Bridge Location
Wayne 1954 146,000
Urban minor
arterial
Second Avenue over I-94
Wayne 1967 100,492 Urban Interstate I-75 over Fort Street
Wayne 1967 100,492 Urban Interstate I-75 over the Rouge River, Dearborn Street and Railroad
Genesee 1971 95,314 Urban Interstate I-69 over M-54 (Dort Highway)
Macomb 1994 87,420
Urban other
principal arterial
M-59 WB over M-53
Oakland 1963 78,894 Urban Interstate I-75 SB over 14 Mile Road
Oakland 1963 78,894 Urban Interstate I-75 NB over 13 Mile Road
Oakland 1963 78,894 Urban Interstate I-75 NB over 14 Mile Road
Oakland 1963 78,894 Urban Interstate I-75 SB over 13 Mile Road
Oakland 1964 65,985 Urban Interstate I-75 SB over M-150 (Rochester Road)
Sources: All data is from the 2014 National Bridge Inventory, released by the Federal Highway Administration in January 2015.
Note that specific conditions on bridge may have changed as a result of recent work. Cost estimates of bridge work provided as
part of the data and have been adjusted to 2014$ 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.