US Bridges

Ia 9 over Drainage Ditch

Fair

Winnebago County, Iowa · 0.8 Mi. E of E JCT SR R34 · Structure no. 000000000052481

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
2,320
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 9 over Drainage Ditch is a prestressed concrete stringer/multi-beam or girder carrying Ia 9 over Drainage Ditch in Winnebago County, Iowa. It was built in 1975, so it is 50 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 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 2,320 vehicles a day, roughly 25% of them trucks, projected to reach 2,320 by 2043. The structure is 99 ft (30.2 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIa 9
CrossesDrainage Ditch
Location0.8 Mi. E of E JCT SR R34
RouteState Highway 9
CountyWinnebago County
StateIowa
Coordinates43.37131, -93.75964
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length99 ft (30.2 m)
Longest span95 ft (29 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,320 (2022)
Projected traffic2,320 by 2043
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 9 over Drainage Ditch built?

It was built in 1975, making it 50 years old in 2025.

What condition is Ia 9 over Drainage Ditch 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 August 2023.

How much traffic does Ia 9 over Drainage Ditch carry?

About 2,320 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is Ia 9 over Drainage Ditch?

The structure is 99 ft (30.2 m) long with a longest span of 95 ft (29 m) and a deck 47 ft wide.

Who owns Ia 9 over Drainage Ditch?

It is owned by the State Highway Agency.