US Bridges

US 30 over Stream

Fair

Harrison County, Iowa · 3.4 Mi. E of Jct. Ia 44 · Structure no. 000000000027470

Built
1919
106 years old, rebuilt 1956
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
41 ft
1 main span
Daily traffic
4,490
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 over Stream is a concrete slab carrying US 30 over Stream in Harrison County, Iowa. It was built in 1919 and reconstructed in 1956, so it is 106 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 4,490 vehicles a day, roughly 17% of them trucks, projected to reach 4,490 by 2043. The structure is 41 ft (12.5 m) long and 34 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesUS 30
CrossesStream
Location3.4 Mi. E of Jct. Ia 44
RouteU.S. Route 30
CountyHarrison County
StateIowa
Coordinates41.71464, -95.70292
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,490 (2022)
Projected traffic4,490 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 US 30 over Stream built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1956.

What condition is US 30 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 August 2023.

How much traffic does US 30 over Stream carry?

About 4,490 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is US 30 over Stream?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns US 30 over Stream?

It is owned by the State Highway Agency.