US Bridges

FM 115th ST over Small Stream

Poor

Franklin County, Iowa · 091191303 · Structure no. 000000000156820

Built
1965
60 years old
Condition
Poor
inspected May 2023
Type
Culvert
Steel
Length
27 ft
2 main spans
Daily traffic
59
2022 count
Owner
County
County Highway Agency

About this bridge

FM 115th ST over Small Stream is a steel culvert carrying FM 115th ST over Small Stream in Franklin County, Iowa. It was built in 1965, so it is 60 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 59 vehicles a day, projected to reach 59 by 2043. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFM 115th ST
CrossesSmall Stream
Location091191303
RouteCounty Highway 0
CountyFranklin County
StateIowa
Coordinates42.6942, -93.03326
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2022)
Projected traffic59 by 2043
Trucks0%
Lanes on structure5
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 FM 115th ST over Small Stream built?

It was built in 1965, making it 60 years old in 2025.

What condition is FM 115th ST over Small Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does FM 115th ST over Small Stream carry?

About 59 vehicles per day (2022 count).

How long is FM 115th ST over Small Stream?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m).

Who owns FM 115th ST over Small Stream?

It is owned by the County Highway Agency.