US Bridges

FM over Seven Mile Creek

Good

Montgomery County, Iowa · 073360801 · Structure no. 000000000256031

Built
2007
18 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
192 ft
3 main spans
Daily traffic
259
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Seven Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying FM over Seven Mile Creek in Montgomery County, Iowa. It was built in 2007, so it is 18 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 259 vehicles a day, roughly 20% of them trucks, projected to reach 259 by 2043. The structure is 192 ft (58.5 m) long and 33 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesFM
CrossesSeven Mile Creek
Location073360801
RouteCounty Highway 0
StateIowa
Coordinates41.14478, -95.02134
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
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 within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.9 US tons
Inventory rating45.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span68 ft (20.7 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic259 (2021)
Projected traffic259 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Seven Mile Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is FM over Seven Mile 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 over Seven Mile Creek carry?

About 259 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is FM over Seven Mile Creek?

The structure is 192 ft (58.5 m) long with a longest span of 68 ft (20.7 m) and a deck 33 ft wide.

Who owns FM over Seven Mile Creek?

It is owned by the County Highway Agency.