US Bridges

FM over Uphams Slough Creek

Good

Floyd County, Iowa · 097152102 · Structure no. 000000000155860

Built
1968
57 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
1,021
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Uphams Slough Creek is a concrete continuous culvert carrying FM over Uphams Slough Creek in Floyd County, Iowa. It was built in 1968, so it is 57 years old, older 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 1,021 vehicles a day, roughly 23% of them trucks, projected to reach 1,021 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM
CrossesUphams Slough Creek
Location097152102
RouteCounty Highway 0
StateIowa
Coordinates43.1995, -92.63394
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43 US tons
Inventory rating25.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,021 (2022)
Projected traffic1,021 by 2044
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$404,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Uphams Slough Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is FM over Uphams Slough Creek 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 March 2024.

How much traffic does FM over Uphams Slough Creek carry?

About 1,021 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is FM over Uphams Slough Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns FM over Uphams Slough Creek?

It is owned by the County Highway Agency.