FM over Smith Run

Fair

Muscatine County, Iowa · 076040105 · Structure no. 000000000257120

Built: 1949; 76 years old
Condition: Fair; inspected September 2023
Type: Culvert; Concrete Continuous
Length: 22 ft; 1 main span
Daily traffic: 560; 2022 count
Owner: County; County Highway Agency

About this bridge

FM over Smith Run is a concrete continuous culvert carrying FM over Smith Run in Muscatine County, Iowa. It was built in 1949, so it is 76 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 5 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 560 vehicles a day, roughly 11% of them trucks, projected to reach 560 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesFM

CrossesSmith Run

Location076040105

RouteCounty Highway 0

CountyMuscatine County

StateIowa

Coordinates41.41528, -91.25429

Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

Component	Rating	Meaning
Channel and channel protection	4 Poor	Advanced section loss, deterioration, spalling or scour.
Culvert	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

Last inspectionSeptember 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy6: Equal to present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating110.1 US tons

Inventory rating110.1 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans1

Design loadH 15

Structure length22 ft (6.7 m)

Longest span20 ft (6.1 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic560 (2022)

Projected traffic560 by 2043

Trucks11%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed6.8 mi (11 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$403,000 (2024 estimate)

NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Smith Run built?

It was built in 1949, making it 76 years old in 2025.

What condition is FM over Smith Run 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 September 2023.

How much traffic does FM over Smith Run carry?

About 560 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is FM over Smith Run?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m).

Who owns FM over Smith Run?

It is owned by the County Highway Agency.