US Bridges

Iowa 3 over US 75 (lemars Bypass)

Good

Plymouth County, Iowa · At the Jct. U.S. 75 · Structure no. 000000000609360

Built
2005
20 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
245 ft
2 main spans
Daily traffic
3,660
2022 count
Owner
State
State Highway Agency

About this bridge

Iowa 3 over US 75 (lemars Bypass) is a prestressed concrete stringer/multi-beam or girder carrying Iowa 3 over US 75 (lemars Bypass) 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,660 vehicles a day, roughly 10% of them trucks, projected to reach 3,660 by 2044. The structure is 245 ft (74.7 m) long and 63 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesIowa 3
CrossesUS 75 (lemars Bypass)
LocationAt the Jct. U.S. 75
RouteState Highway 3
CountyPlymouth County
StateIowa
Coordinates42.79305, -96.20474
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
Deck7 GoodSome minor problems.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.4 US tons
Inventory rating38.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length245 ft (74.7 m)
Longest span120 ft (36.6 m)
Deck width63 ft (19.2 m)
Roadway width60 ft (18.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,660 (2022)
Projected traffic3,660 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 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 Iowa 3 over US 75 (lemars Bypass) built?

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

What condition is Iowa 3 over US 75 (lemars Bypass) 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 Iowa 3 over US 75 (lemars Bypass) carry?

About 3,660 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Iowa 3 over US 75 (lemars Bypass)?

The structure is 245 ft (74.7 m) long with a longest span of 120 ft (36.6 m) and a deck 63 ft wide.

Who owns Iowa 3 over US 75 (lemars Bypass)?

It is owned by the State Highway Agency.