US Bridges

FM 165 ST over Small Stream

Fair

Delaware County, Iowa · 089060303 · Structure no. 000000000141900

Built
1970
55 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
825
2022 count
Owner
County
County Highway Agency

About this bridge

FM 165 ST over Small Stream is a concrete culvert carrying FM 165 ST over Small Stream in Delaware County, Iowa. It was built in 1970, so it is 55 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 825 vehicles a day, roughly 8% of them trucks, projected to reach 825 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM 165 ST
CrossesSmall Stream
Location089060303
RouteCounty Highway 0
StateIowa
Coordinates42.54927, -91.53818
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 alignment8: Equal to present desirable criteria
Operating rating67.7 US tons
Inventory rating52.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic825 (2022)
Projected traffic825 by 2044
Trucks8%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 165 ST over Small Stream built?

It was built in 1970, making it 55 years old in 2025.

What condition is FM 165 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 FM 165 ST over Small Stream carry?

About 825 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is FM 165 ST over Small Stream?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns FM 165 ST over Small Stream?

It is owned by the County Highway Agency.