Functionally obsolete 

355

Structurally deficient 

258

Aluminum, Wrought iron, or Cast iron

18

Concrete

310

Concrete continuous

1,806

Masonry

1

Prestressed concrete

712

Prestressed concrete continuous

385

Steel

375

Steel continuous

233

Wood or Timber

179

Other

7

Highway

3,969

Pedestrian-bicycle

78

Railroad

23

Second level (interchange)

5

Third level (interchange)

3

Fourth level (interchange)

2

Other

1

Highway

670

Pedestrian-bicycle

1

Railroad

126

Waterway

3,259

Waterway (relief)

10

Other

17

Arch - deck

6

Arch - thru

5

Box beam or Girders - multiple

109

Box beam or Girders - single or spread

57

Channel beam

54

Culvert

1,764

Frame

23

Girder and Floorbeam system

14

Segmental box girder

9

Slab

359

Stringer / Multi-beam or Girder

1,486

Tee beam

95

Truss - deck

5

Truss - thru

40