US Bridges

Ia 13 over Dry Run Creek

Good

Clayton County, Iowa · 0.3 Mi. S of Jct. Ia 56 · Structure no. 000000000020611

Built
1977
48 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
3,370
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 13 over Dry Run Creek is a concrete continuous culvert carrying Ia 13 over Dry Run Creek in Clayton County, Iowa. It was built in 1977, so it is 48 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 3,370 vehicles a day, roughly 19% of them trucks, projected to reach 3,370 by 2043. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesIa 13
CrossesDry Run Creek
Location0.3 Mi. S of Jct. Ia 56
RouteState Highway 13
CountyClayton County
StateIowa
Coordinates42.83873, -91.40755
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.4 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 traffic3,370 (2022)
Projected traffic3,370 by 2043
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 13 over Dry Run Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Ia 13 over Dry Run Creek 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 13 over Dry Run Creek carry?

About 3,370 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is Ia 13 over Dry Run Creek?

The structure is 31 ft (9.4 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 13 over Dry Run Creek?

It is owned by the State Highway Agency.