US Bridges

D 19 160th ST over Small Stream

Fair

Grundy County, Iowa · 088160607 · Structure no. 000000000025861

Built
1984
41 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
560
2022 count
Owner
County
County Highway Agency

About this bridge

D 19 160th ST over Small Stream is a concrete continuous culvert carrying D 19 160th ST over Small Stream in Grundy County, Iowa. It was built in 1984, so it is 41 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 560 vehicles a day, roughly 14% of them trucks, projected to reach 560 by 2044. The structure is 36 ft (11.1 m) long and 78 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesD 19 160th ST
CrossesSmall Stream
Location088160607
RouteCounty Highway 0
StateIowa
Coordinates42.46997, -92.75884
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (11.1 m)
Longest span11 ft (3.5 m)
Deck width78 ft (23.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic560 (2022)
Projected traffic560 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was D 19 160th ST over Small Stream built?

It was built in 1984, making it 41 years old in 2025.

What condition is D 19 160th ST over Small Stream 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 D 19 160th ST over Small Stream carry?

About 560 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is D 19 160th ST over Small Stream?

The structure is 36 ft (11.1 m) long with a longest span of 11 ft (3.5 m) and a deck 78 ft wide.

Who owns D 19 160th ST over Small Stream?

It is owned by the County Highway Agency.