US Bridges

FM 390th ST over Mud Creek

Good

Kossuth County, Iowa · 098291001 · Structure no. 000000000216521

Built
2003
22 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
100
2021 count
Owner
County
County Highway Agency

About this bridge

FM 390th ST over Mud Creek is a concrete continuous slab carrying FM 390th ST over Mud Creek in Kossuth County, Iowa. It was built in 2003, so it is 22 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 100 vehicles a day, roughly 21% of them trucks, projected to reach 100 by 2043. The structure is 91 ft (27.6 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM 390th ST
CrossesMud Creek
Location098291001
RouteCounty Highway 0
StateIowa
Coordinates43.3274, -94.25252
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.7 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length91 ft (27.6 m)
Longest span34 ft (10.4 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic100 by 2043
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 390th ST over Mud Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is FM 390th ST over Mud 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 May 2023.

How much traffic does FM 390th ST over Mud Creek carry?

About 100 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is FM 390th ST over Mud Creek?

The structure is 91 ft (27.6 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.

Who owns FM 390th ST over Mud Creek?

It is owned by the County Highway Agency.