US Bridges

Heather Ave over Small Stream

Fair

Franklin County, Iowa · 093210802 · Structure no. 000000000158451

Built
1990
35 years old
Condition
Fair
inspected June 2022
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

Heather Ave over Small Stream is a concrete continuous culvert carrying Heather Ave over Small Stream in Franklin County, Iowa. It was built in 1990, so it is 35 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 30 vehicles a day, projected to reach 30 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHeather Ave
CrossesSmall Stream
Location093210802
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.88114, -93.36031
Functional classRural Local

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 inspectionJune 2022
Inspection intervalevery 48 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 rating48.6 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 span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Heather Ave over Small Stream built?

It was built in 1990, making it 35 years old in 2025.

What condition is Heather Ave 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 2022.

How much traffic does Heather Ave over Small Stream carry?

About 30 vehicles per day (2022 count).

How long is Heather Ave over Small Stream?

The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.7 m).

Who owns Heather Ave over Small Stream?

It is owned by the County Highway Agency.