US Bridges

College DR over Upper Iowa River

Fair

Winneshiek County, Iowa · 000000000 · Structure no. 000000000003541

Built
1987
38 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
305 ft
5 main spans
Daily traffic
8,868
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

College DR over Upper Iowa River is a prestressed concrete stringer/multi-beam or girder carrying College DR over Upper Iowa River in Winneshiek County, Iowa. It was built in 1987, so it is 38 years old, younger 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 8,868 vehicles a day, roughly 2% of them trucks, projected to reach 8,868 by 2044. The structure is 305 ft (93 m) long and 71 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCollege DR
CrossesUpper Iowa River
Location000000000
RouteCity Street 0
CountyWinneshiek County
StateIowa
Coordinates43.30576, -91.79497
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.8 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length305 ft (93 m)
Longest span82 ft (25 m)
Deck width71 ft (21.5 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,868 (2022)
Projected traffic8,868 by 2044
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was College DR over Upper Iowa River built?

It was built in 1987, making it 38 years old in 2025.

What condition is College DR over Upper Iowa 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 January 2024.

How much traffic does College DR over Upper Iowa River carry?

About 8,868 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is College DR over Upper Iowa River?

The structure is 305 ft (93 m) long with a longest span of 82 ft (25 m) and a deck 71 ft wide.

Who owns College DR over Upper Iowa River?

It is owned by the City or Municipal Highway Agency.