US Bridges

FM over Small Stream

Fair

Dubuque County, Iowa · 000000000 · Structure no. 000000000147120

Built
1950
75 years old
Condition
Fair
inspected June 2023
Type
Culvert
Steel
Length
32 ft
2 main spans
Daily traffic
769
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Small Stream is a steel culvert carrying FM over Small Stream in Dubuque County, Iowa. It was built in 1950, so it is 75 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 769 vehicles a day, roughly 27% of them trucks, projected to reach 769 by 2043. The structure is 32 ft (9.8 m) long.

Location

Open in Google Maps
CarriesFM
CrossesSmall Stream
Location000000000
RouteCity Street 0
CountyDubuque County
StateIowa
Coordinates42.50007, -90.78792
Functional classUrban 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating25.6 US tons
Inventory rating18.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length32 ft (9.8 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 traffic769 (2022)
Projected traffic769 by 2043
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Small Stream built?

It was built in 1950, making it 75 years old in 2025.

What condition is FM 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 June 2023.

How much traffic does FM over Small Stream carry?

About 769 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is FM over Small Stream?

The structure is 32 ft (9.8 m) long with a longest span of 14 ft (4.3 m).

Who owns FM over Small Stream?

It is owned by the County Highway Agency.