US Bridges

Ia 141 over Soldier River

Fair

Monona County, Iowa · 3.9 Mi. W of Ia 183 · Structure no. 000000000036790

Built
1951
74 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
245 ft
3 main spans
Daily traffic
780
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 141 over Soldier River is a steel continuous stringer/multi-beam or girder carrying Ia 141 over Soldier River in Monona County, Iowa. It was built in 1951, so it is 74 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 780 vehicles a day, roughly 17% of them trucks, projected to reach 780 by 2043. The structure is 245 ft (74.7 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIa 141
CrossesSoldier River
Location3.9 Mi. W of Ia 183
RouteState Highway 141
CountyMonona County
StateIowa
Coordinates42.10654, -95.71049
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.8 US tons
Inventory rating26.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length245 ft (74.7 m)
Longest span94 ft (28.7 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic780 (2023)
Projected traffic780 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 141 over Soldier River built?

It was built in 1951, making it 74 years old in 2025.

What condition is Ia 141 over Soldier River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Ia 141 over Soldier River carry?

About 780 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Ia 141 over Soldier River?

The structure is 245 ft (74.7 m) long with a longest span of 94 ft (28.7 m) and a deck 32 ft wide.

Who owns Ia 141 over Soldier River?

It is owned by the State Highway Agency.