US Bridges

Ia 150 over Cedar River

Fair

Benton County, Iowa · 1.0 Mi. South of SR E16 · Structure no. 000000000014461

Built
1980
45 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
812 ft
9 main spans
Daily traffic
3,840
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 150 over Cedar River is a prestressed concrete stringer/multi-beam or girder carrying Ia 150 over Cedar River in Benton County, Iowa. It was built in 1980, so it is 45 years old, younger 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 6 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 3,840 vehicles a day, roughly 5% of them trucks, projected to reach 3,840 by 2044. The structure is 812 ft (247.5 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIa 150
CrossesCedar River
Location1.0 Mi. South of SR E16
RouteState Highway 150
CountyBenton County
StateIowa
Coordinates42.16999, -92.02399
Functional classUrban Other Principal 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.3 US tons
Inventory rating52.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20 + Mod
Structure length812 ft (247.5 m)
Longest span97 ft (29.6 m)
Deck width41 ft (12.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,840 (2022)
Projected traffic3,840 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 150 over Cedar River built?

It was built in 1980, making it 45 years old in 2025.

What condition is Ia 150 over Cedar 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 April 2023.

How much traffic does Ia 150 over Cedar River carry?

About 3,840 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Ia 150 over Cedar River?

The structure is 812 ft (247.5 m) long with a longest span of 97 ft (29.6 m) and a deck 41 ft wide.

Who owns Ia 150 over Cedar River?

It is owned by the State Highway Agency.