Functionally obsolete 

1,898

Structurally deficient 

1,739

Aluminum, Wrought iron, or Cast iron

1

Concrete

8,075

Concrete continuous

138

Prestressed concrete

1,252

Prestressed concrete continuous

405

Steel

1,507

Steel continuous

236

Wood or Timber

1,433

Other

10

Highway

12,715

Pedestrian-bicycle

523

Railroad

45

Second level (interchange)

288

Third level (interchange)

5

Fourth level (interchange)

3

Highway

1,276

Pedestrian-bicycle

3

Railroad

371

Waterway

11,346

Waterway (relief)

280

Other

177

Arch - deck

24

Box beam or Girders - multiple

109

Box beam or Girders - single or spread

3

Channel beam

307

Culvert

2,524

Frame

1

Girder and Floorbeam system

216

Mixed types

1

Movable - bascule

16

Movable - lift

46

Movable - swing

83

Segmental box girder

1

Slab

5,759

Stayed girder

2

Stringer / Multi-beam or Girder

3,565

Tee beam

345

Truss - deck

2

Truss - thru

41

Other

12