US Bridges

FM over Munns Creek

Fair

Grundy County, Iowa · 087162202 · Structure no. 000000000164221

Built
1994
31 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
628
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Munns Creek is a concrete continuous culvert carrying FM over Munns Creek in Grundy County, Iowa. It was built in 1994, so it is 31 years old, younger 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 6 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 628 vehicles a day, roughly 18% of them trucks, projected to reach 628 by 2044. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesMunns Creek
Location087162202
RouteCounty Highway 0
StateIowa
Coordinates42.33608, -92.70976
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.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic628 (2022)
Projected traffic628 by 2044
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 over Munns Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is FM over Munns Creek 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 April 2024.

How much traffic does FM over Munns Creek carry?

About 628 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is FM over Munns Creek?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns FM over Munns Creek?

It is owned by the County Highway Agency.