US Bridges

US 75 SB over Ia 60

Good

Plymouth County, Iowa · At Jct. Iowa 60 · Structure no. 000000000609375

Built
2005
20 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
234 ft
3 main spans
Daily traffic
2,070
2022 count
Owner
State
State Highway Agency

About this bridge

US 75 SB over Ia 60 is a prestressed concrete stringer/multi-beam or girder carrying US 75 SB over Ia 60 in Plymouth County, Iowa. It was built in 2005, so it is 20 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,070 vehicles a day, roughly 18% of them trucks, projected to reach 2,070 by 2044. The structure is 234 ft (71.3 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 75 SB
CrossesIa 60
LocationAt Jct. Iowa 60
RouteState Highway 404
CountyPlymouth County
StateIowa
Coordinates42.81843, -96.17479
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length234 ft (71.3 m)
Longest span115 ft (35.1 m)
Deck width46 ft (13.9 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,070 (2022)
Projected traffic2,070 by 2044
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 75 SB over Ia 60 built?

It was built in 2005, making it 20 years old in 2025.

What condition is US 75 SB over Ia 60 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does US 75 SB over Ia 60 carry?

About 2,070 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is US 75 SB over Ia 60?

The structure is 234 ft (71.3 m) long with a longest span of 115 ft (35.1 m) and a deck 46 ft wide.

Who owns US 75 SB over Ia 60?

It is owned by the State Highway Agency.