US Bridges

Ia 9 over So Branch Turkey River

Fair

Howard County, Iowa · 2.1 Mi. E of US 63 · Structure no. 000000000028751

Built
1974
51 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
3,440
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 9 over So Branch Turkey River is a concrete continuous culvert carrying Ia 9 over So Branch Turkey River in Howard County, Iowa. It was built in 1974, so it is 51 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 3,440 vehicles a day, roughly 13% of them trucks, projected to reach 3,440 by 2043. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIa 9
CrossesSo Branch Turkey River
Location2.1 Mi. E of US 63
RouteState Highway 9
CountyHoward County
StateIowa
Coordinates43.371, -92.25734
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.2 US tons
Inventory rating31.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length38 ft (11.6 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 traffic3,440 (2022)
Projected traffic3,440 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

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 So Branch Turkey River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Ia 9 over So Branch Turkey 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 October 2023.

How much traffic does Ia 9 over So Branch Turkey River carry?

About 3,440 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Ia 9 over So Branch Turkey River?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 9 over So Branch Turkey River?

It is owned by the State Highway Agency.