US Bridges

Ia 13 over Volga River

Fair

Clayton County, Iowa · 4.1 Mi. S of Jct. Ia 56 · Structure no. 000000000020601

Built
1978
47 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
313 ft
4 main spans
Daily traffic
2,680
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 13 over Volga River is a prestressed concrete stringer/multi-beam or girder carrying Ia 13 over Volga River in Clayton County, Iowa. It was built in 1978, so it is 47 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 5 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 2,680 vehicles a day, roughly 17% of them trucks, projected to reach 2,680 by 2044. The structure is 313 ft (95.4 m) long and 47 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesIa 13
CrossesVolga River
Location4.1 Mi. S of Jct. Ia 56
RouteState Highway 13
CountyClayton County
StateIowa
Coordinates42.79519, -91.44231
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.3 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length313 ft (95.4 m)
Longest span77 ft (23.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,680 (2022)
Projected traffic2,680 by 2044
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Volga River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Ia 13 over Volga River 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 April 2024.

How much traffic does Ia 13 over Volga River carry?

About 2,680 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Ia 13 over Volga River?

The structure is 313 ft (95.4 m) long with a longest span of 77 ft (23.5 m) and a deck 47 ft wide.

Who owns Ia 13 over Volga River?

It is owned by the State Highway Agency.