US Bridges

US 30 over Youngs Ditch

Fair

Harrison County, Iowa · 0.8 Mi. E of SR K-45 · Structure no. 000000000027350

Built
1953
72 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
196 ft
5 main spans
Daily traffic
4,410
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 over Youngs Ditch is a concrete continuous slab carrying US 30 over Youngs Ditch in Harrison County, Iowa. It was built in 1953, so it is 72 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 4,410 vehicles a day, roughly 28% of them trucks, projected to reach 4,410 by 2043. The structure is 196 ft (59.7 m) long and 34 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

Location

Open in Google Maps
CarriesUS 30
CrossesYoungs Ditch
Location0.8 Mi. E of SR K-45
RouteU.S. Route 30
CountyHarrison County
StateIowa
Coordinates41.5512, -96.01707
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 above top of footing
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 rating53.9 US tons
Inventory rating32.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length196 ft (59.7 m)
Longest span42 ft (12.8 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,410 (2022)
Projected traffic4,410 by 2043
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 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 Youngs Ditch built?

It was built in 1953, making it 72 years old in 2025.

What condition is US 30 over Youngs Ditch 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 Youngs Ditch carry?

About 4,410 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is US 30 over Youngs Ditch?

The structure is 196 ft (59.7 m) long with a longest span of 42 ft (12.8 m) and a deck 34 ft wide.

Who owns US 30 over Youngs Ditch?

It is owned by the State Highway Agency.