US Bridges

Ia 64 over Stream

Good

Jones County, Iowa · 0.4 Mi. E of E Jct. Ia 38 · Structure no. 000000000032451

Built
1979
46 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
1,720
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 64 over Stream is a concrete continuous culvert carrying Ia 64 over Stream in Jones County, Iowa. It was built in 1979, so it is 46 years old, older 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 1,720 vehicles a day, roughly 12% of them trucks, projected to reach 1,720 by 2043. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIa 64
CrossesStream
Location0.4 Mi. E of E Jct. Ia 38
RouteState Highway 64
CountyJones County
StateIowa
Coordinates42.06277, -91.091
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.6 US tons
Inventory rating27.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,720 (2022)
Projected traffic1,720 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 64 over Stream built?

It was built in 1979, making it 46 years old in 2025.

What condition is Ia 64 over Stream 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 August 2023.

How much traffic does Ia 64 over Stream carry?

About 1,720 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Ia 64 over Stream?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 64 over Stream?

It is owned by the State Highway Agency.