US Bridges

Ia 13 over Turkey River

Good

Clayton County, Iowa · 0.1 Mi. N of Jct. Ia 56 · Structure no. 000000000604470

Built
1982
43 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
281 ft
3 main spans
Daily traffic
2,800
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 13 over Turkey River is a prestressed concrete stringer/multi-beam or girder carrying Ia 13 over Turkey River in Clayton County, Iowa. It was built in 1982, so it is 43 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 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 2,800 vehicles a day, roughly 24% of them trucks, projected to reach 2,800 by 2044. The structure is 281 ft (85.6 m) long and 50 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesIa 13
CrossesTurkey River
Location0.1 Mi. N of Jct. Ia 56
RouteState Highway 13
CountyClayton County
StateIowa
Coordinates42.84282, -91.40118
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating38.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length281 ft (85.6 m)
Longest span97 ft (29.6 m)
Deck width50 ft (15.1 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2022)
Projected traffic2,800 by 2044
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 Turkey River built?

It was built in 1982, making it 43 years old in 2025.

What condition is Ia 13 over Turkey River 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 July 2024.

How much traffic does Ia 13 over Turkey River carry?

About 2,800 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is Ia 13 over Turkey River?

The structure is 281 ft (85.6 m) long with a longest span of 97 ft (29.6 m) and a deck 50 ft wide.

Who owns Ia 13 over Turkey River?

It is owned by the State Highway Agency.