Functionally obsolete 

2,986

Structurally deficient 

3,194

Aluminum, Wrought iron, or Cast iron

79

Concrete

3,017

Concrete continuous

5,356

Masonry

17

Prestressed concrete

2,359

Prestressed concrete continuous

2,327

Steel

8,287

Steel continuous

2,952

Wood or Timber

92

Other

7

Highway

24,396

Pedestrian-bicycle

491

Railroad

4

Second level (interchange)

79

Third level (interchange)

17

Fourth level (interchange)

1

Highway

2,309

Pedestrian-bicycle

11

Railroad

761

Waterway

21,644

Waterway (relief)

104

Other

39

Arch - deck

89

Arch - thru

10

Box beam or Girders - multiple

755

Box beam or Girders - single or spread

410

Channel beam

229

Culvert

5,164

Frame

23

Girder and Floorbeam system

314

Segmental box girder

1

Slab

2,522

Stayed girder

5

Stringer / Multi-beam or Girder

12,622

Suspension

4

Tee beam

1,762

Truss - deck

5

Truss - thru

563

Other

15