US Bridges

Ia 26 over Indian Creek

Fair

Allamakee County, Iowa · 5.7 Mi. N of Jct. Ia 9 · Structure no. 000000000609920

Built
1935
90 years old, rebuilt 2008
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
1,540
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 26 over Indian Creek is a concrete continuous culvert carrying Ia 26 over Indian Creek in Allamakee County, Iowa. It was built in 1935 and reconstructed in 2008, so it is 90 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 1,540 vehicles a day, roughly 8% of them trucks, projected to reach 1,540 by 2044. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesIa 26
CrossesIndian Creek
Location5.7 Mi. N of Jct. Ia 9
RouteState Highway 26
CountyAllamakee County
StateIowa
Coordinates43.43556, -91.26767
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,540 (2022)
Projected traffic1,540 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 26 over Indian Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2008.

What condition is Ia 26 over Indian Creek 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 November 2024.

How much traffic does Ia 26 over Indian Creek carry?

About 1,540 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Ia 26 over Indian Creek?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns Ia 26 over Indian Creek?

It is owned by the State Highway Agency.