Functionally obsolete 

4,206

Structurally deficient 

4,506

Aluminum, Wrought iron, or Cast iron

81

Concrete

5,903

Concrete continuous

558

Masonry

337

Prestressed concrete

7,862

Prestressed concrete continuous

708

Steel

5,463

Steel continuous

1,670

Wood or Timber

192

Other

19

Highway

22,492

Pedestrian-bicycle

3,372

Railroad

5

Second level (interchange)

290

Third level (interchange)

11

Highway

4,696

Pedestrian-bicycle

31

Railroad

1,516

Waterway

17,642

Waterway (relief)

12

Other

144

Arch - deck

901

Arch - thru

21

Box beam or Girders - multiple

3,340

Box beam or Girders - single or spread

3,339

Channel beam

104

Culvert

2,372

Frame

233

Girder and Floorbeam system

549

Mixed types

1

Movable - bascule

2

Orthotropic

1

Segmental box girder

5

Slab

1,226

Stringer / Multi-beam or Girder

8,045

Suspension

8

Tee beam

2,017

Truss - deck

45

Truss - thru

489

Other

95