US Bridges

FM (lwc) over Small Stream

Good

Benton County, Iowa · 082122905 · Structure no. 000000000363670

Built
1993
32 years old
Condition
Good
inspected April 2023
Type
Slab
Steel
Length
34 ft
1 main span
Daily traffic
410
2021 count
Owner
County
County Highway Agency

About this bridge

FM (lwc) over Small Stream is a steel slab carrying FM (lwc) over Small Stream in Benton County, Iowa. It was built in 1993, so it is 32 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 410 vehicles a day, roughly 13% of them trucks, projected to reach 410 by 2043. The structure is 34 ft (10.4 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM (lwc)
CrossesSmall Stream
Location082122905
RouteCounty Highway 0
CountyBenton County
StateIowa
Coordinates41.88494, -92.27667
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.3 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2021)
Projected traffic410 by 2043
Trucks13%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM (lwc) over Small Stream built?

It was built in 1993, making it 32 years old in 2025.

What condition is FM (lwc) over Small Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does FM (lwc) over Small Stream carry?

About 410 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is FM (lwc) over Small Stream?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 29 ft wide.

Who owns FM (lwc) over Small Stream?

It is owned by the County Highway Agency.