National Bridge Inventory: Pennsylvania



  • Of the 22,737 bridges in the Commonwealth, 3,770, or 16.6 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 4,969 bridges classified as structurally deficient in 2014.
  • 106 of the structurally deficient bridges are on the Interstate Highway System.
  • 2,355 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 11,758 bridges at an estimated cost of $12.7 billion.
  • This compares to 13,298 bridges that needed work in 2014.

County Year Built Daily Crossings Type of Bridge Location
Philadelphia 1967 194,917 Urban Interstate Interstate 95 over Fraley Street
Philadelphia 1967 194,917 Urban Interstate Interstate 95 over Comly Street
Philadelphia 1965 193,491 Urban Interstate Delaware Expway. over Venango Street
Philadelphia 1965 193,491 Urban Interstate Delaware Expway. over Wheatsheaf Lane
Philadelphia 1968 190,289 Urban Interstate Interstate 95 over earth fill & sewer access
Philadelphia 1971 174,389 Urban Interstate Delaware Expway. over Palmer-Cumberland Strs.
Philadelphia 1970 174,389 Urban Interstate Delaware Expway. over Shackamaxon Street
Philadelphia 1965 174,389 Urban Interstate Delaware Expway. over Sergeant & Huntingdon St
Montgomery 1952 96,760 Urban Interstate Schuylkill Expway. over Righters Ferry Road
Lehigh 1954 90,188 Urban freeway/expressway US 22(LR 771) over Lehigh Canal,SR 17,Nsr
Lehigh 1954 90,188 Urban freeway/expressway Lehigh River Bridge (Lehigh Valley Thruway/US 22/LR 771 over Lehigh River, Corman Railroad)
Philadelphia 1960 87,730 Urban freeway/expressway Roosevelt Blvd Ext over Roberts Ave;Septa;CSX
Northampton 1954 74,615 Urban freeway/expressway US 22 (LR 772) over Pa 512(LR 48046)
Bucks 1967 69,232 Urban freeway/expressway Lincoln Highway over Street Road
Bucks 1954 69,232 Urban freeway/expressway Lincoln Highway over Ramp E,F to Turnpike
Berks 1963 66,235 Urban freeway/expressway SR 422 (Lr793) over Thun Recreational Trail
Montgomery 1955 65,329 Rural Interstate Pa Tpk (I-476) over T-397
Montgomery 1954 65,329 Rural Interstate Pa Tpk (I-476) over SR 0363, Lr 463
York 1959 64,540 Urban Interstate I-83; SR 83 over 22/Springwood Rd
Bucks 1967 64,145 Urban freeway/expressway New US-1 By-Pass over CSX/Septa, Sr2037 Spur B
Montgomery 1974 61,080 Urban Interstate Mid-County Exwy.NB over Montgomery Avenue
Montgomery 1953 58,948 Urban other principal arterial Easton Rd 3258K4 over Pa Turnpike Ramp Ab
York 1957 58,709 Urban Interstate 83 over 181 George St
York 1959 58,709 Urban Interstate I-83; SR 83 over US 30; SR 30
Berks 1963 55,030 Urban freeway/expressway SR 422(LR 793) over Schuylkill River
Type of Bridge Number of Bridges Area of All Bridges
(sq. meters)
Daily Crossings on All Bridges Number of Structurally Deficient Bridges Area of Structurally Deficient Bridges
(sq. meters)
Daily Crossings on Structurally Deficient Bridges
Rural Interstate 1,017 1,430,337 17,948,957 36 27,842 991,787
Rural arterial 962 917,991 7,652,502 43 11,868 418,523
Rural minor arterial 1,451 560,911 5,462,884 189 41,534 606,826
Rural major collector 1,866 625,047 3,073,731 253 81,645 406,358
Rural minor collector 2,014 443,827 1,437,611 334 56,046 270,393
Rural local road 7,123 1,225,174 2,800,035 1,788 233,368 666,568
Urban Interstate 1,445 2,950,778 55,374,549 70 143,190 3,298,475
Urban freeway/expressway 865 1,210,074 23,396,553 31 62,236 1,120,375
Urban other principal arterial 1,501 2,239,206 24,261,294 186 193,638 2,948,819
Urban minor arterial 1,517 1,103,733 14,117,073 214 131,211 1,932,892
Urban collector 1,417 593,777 5,767,793 234 68,723 963,213
Urban local road 1,559 644,387 3,844,473 392 119,551 808,655
Total 22,737 13,945,241 165,137,455 3,770 1,170,852 14,432,884
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 2,255 $1,896 6,207,117 557,153
Widening & rehabilitation 113 $68 803,149 50,203
Rehabilitation 7,775 $9,055 69,384,899 5,676,191
Deck rehabilitation/replacement 960 $1,239 6,417,155 798,958
Other structural work 655 $447 3,588,739 367,425
Total 11,758 $12,704 86,401,059 7,449,930

About the data:

Data from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), released March 15, 2019. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

Effective January 1, 2018, FHWA changed the definition of structurally deficient as part of the final rule on highway and bridge performance measures, published May 20, 2017 pursuant to the 2012 federal aid highway bill Moving Ahead for Progress in the 21st Century Act (MAP-21). Two measures that were previously used to classify bridges as structurally deficient are no longer used. This includes bridges where the overall structural evaluation was rated in poor or worse condition, or where the adequacy of waterway openings was insufficient.

The new definition limits the classification to bridges where one of the key structural elements—the deck, superstructure, substructure or culverts, are rated in poor or worse condition. During inspection, the conditions 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.

Cost estimates have been derived by ARTBA, based on 2017 average bridge replacement costs for structures on and off the National Highway System, published by FHWA. Bridge rehabilitation costs are estimated to be 68 percent of replacement costs. A bridge is considered to need repair if the structure has identified repairs as part of the NBI, a cost estimate is supplied by the bridge owner or the bridge is classified as structurally deficient.

Bridges are classified by FHWA into types based on the functional classification of the roadway on the bridge. Interstates comprise routes officially designated by the Secretary of Transportation. Other principal arterials serve major centers of urban areas or provide mobility through rural areas. Freeways and expressways have directional lanes generally separated by a physical barrier, and access/egress points generally limited to on- and off-ramps. Minor arterials serve smaller areas and are used for trips of moderate length. Collectors funnel traffic from local roads to the arterial network; major collectors have higher speed limits and traffic volumes and are longer in length and spaced at greater intervals, while minor collectors are shorter and provide service to smaller communities. Local roads do not carry through traffic and are intended for short distance travel.

5
from 4 in 2017

in the nation in % of structurally deficient bridges

1. Rhode Island 23.1%
4. South Dakota 16.7%
5. Pennsylvania 16.6%
6. Maine 13.1%

2
from 2 in 2017

in the nation in # of structurally deficient bridges

1. Iowa 4,675
2. Pennsylvania 3,770
3. Oklahoma 2,540
Full State Ranking

  • Source: Bridge data is from the 2018 National Bridge Inventory ASCII files, released by the Federal Highway Administration on March 14, 2019. Note that specific conditions on bridges may have changed as a result of recent work. ARTBA is a non-partisan federation whose primary goal is to aggressively grow and protect transportation infrastructure investment to meet the public and business demand for safe and efficient travel.
  • Privacy & Cookies Policy
Connect With Us

Copyright © 2019 American Road & Transportation Builders Association