US Bridges

US 6 over Unnamed Stream

Good

Iowa County, Iowa · 0.36 Mi. W of SR V52 · Structure no. 000000000700765

Built
2016
9 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,680
2022 count
Owner
State
State Highway Agency

About this bridge

US 6 over Unnamed Stream is a concrete continuous culvert carrying US 6 over Unnamed Stream in Iowa County, Iowa. It was built in 2016, so it is 9 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,680 vehicles a day, roughly 15% of them trucks, projected to reach 1,680 by 2044. The structure is 26 ft (7.8 m) long.

CarriesUS 6
CrossesUnnamed Stream
Location0.36 Mi. W of SR V52
RouteU.S. Route 6
StateIowa
Coordinates41.75372, -92.18876
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 protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.8 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 traffic1,680 (2022)
Projected traffic1,680 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 US 6 over Unnamed Stream built?

It was built in 2016, making it 9 years old in 2025.

What condition is US 6 over Unnamed 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 December 2024.

How much traffic does US 6 over Unnamed Stream carry?

About 1,680 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is US 6 over Unnamed Stream?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.7 m).

Who owns US 6 over Unnamed Stream?

It is owned by the State Highway Agency.