US Bridges

FM over East Boyer River

Good

Crawford County, Iowa · 084371406 · Structure no. 000000000128541

Built
1994
31 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
116 ft
3 main spans
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

FM over East Boyer River is a concrete continuous slab carrying FM over East Boyer River in Crawford 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 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 40 vehicles a day, roughly 33% of them trucks, projected to reach 40 by 2044. The structure is 116 ft (35.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesEast Boyer River
Location084371406
RouteCounty Highway 0
StateIowa
Coordinates42.0843, -95.13031
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.8 US tons
Inventory rating54.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length116 ft (35.4 m)
Longest span44 ft (13.4 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2022)
Projected traffic40 by 2044
Trucks33%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over East Boyer River built?

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

What condition is FM over East Boyer River 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 East Boyer River carry?

About 40 vehicles per day (2022 count), of which roughly 33% are trucks.

How long is FM over East Boyer River?

The structure is 116 ft (35.4 m) long with a longest span of 44 ft (13.4 m) and a deck 27 ft wide.

Who owns FM over East Boyer River?

It is owned by the County Highway Agency.