US Bridges

Ia 48 over Stream

Fair

Montgomery County, Iowa · 0.2 Mi. S of Jct. Ia 34 · Structure no. 000000000037720

Built
1931
94 years old, rebuilt 1965
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
7,600
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 48 over Stream is a concrete continuous culvert carrying Ia 48 over Stream in Montgomery County, Iowa. It was built in 1931 and reconstructed in 1965, so it is 94 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 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 7,600 vehicles a day, roughly 5% of them trucks, projected to reach 7,600 by 2042. The structure is 22 ft (6.7 m) long.

Location

Open in Google Maps
CarriesIa 48
CrossesStream
Location0.2 Mi. S of Jct. Ia 34
RouteState Highway 48
CountyMontgomery County
StateIowa
Coordinates41.02355, -95.23286
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2022)
Projected traffic7,600 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 48 over Stream built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1965.

What condition is Ia 48 over Stream 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 48 over Stream carry?

About 7,600 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Ia 48 over Stream?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Ia 48 over Stream?

It is owned by the State Highway Agency.