LOCAL over IOWAY CREEK (Route: 0)
Num:171030x
Posted for load [P]
Built: 1917, Reconstructed: N/A [0000]
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Tee beam [04]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 19.8 m = 65.0 ft
Main Spans: 2 at 9.1 m = 29.9 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 5.6 m = 18.4 ft (2 Lanes) and Out-To-Out: 6.2 m = 20.3 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Hamilton County [079], Iowa [19]
Owned by County Highway Agency [02], DOT District: 0
86253201

Condition
Deck: Serious [3]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design:
Operating: 17.6 metric ton = 19.4 tons (Allowable Stress(AS) [2])
Inventory: 10.5 metric ton = 11.6 tons (Allowable Stress(AS) [2])

Appraisal
Structural: Basically intolerable requiring high priority of replacement [2]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2020 [0920] and Frequency: 12

Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 45 (2019) and Trucks: 11%
Future ADT: 45 (In 2040 )

IA 17 over IOWAY CREEK (Route: 17)
Num:26451x
Open: no restriction [A]
Built: 1979, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Concrete continuous [2] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]

Bridge Dimensions
Length: 40.5 m = 132.9 ft
Main Spans: 3 at 15.5 m = 50.9 ft
Approach Spans: 0
Skew: 15
Width, Roadway: 13.4 m = 44.0 ft (2 Lanes) and Out-To-Out: 14.4 m = 47.2 ft for a 14.6 m = 47.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A

Location
Unknown [00000]: Hamilton County [079], Iowa [19]
Owned by State Highway Agency [01], DOT District: 1
0.9 mi. S of Jct. SR D65

Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 53.2 metric ton = 58.5 tons (Allowable Stress(AS) [2])
Inventory: 21.7 metric ton = 23.9 tons (Allowable Stress(AS) [2])

Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: March 2020 [0320] and Frequency: 24

Future Work
Work Needed:
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 2280 (2019) and Trucks: 13%
Future ADT: 2280 (In 2040 )