US Bridges

Local over Boyer River

Good

Crawford County, Iowa · 084392603 · Structure no. 000000000129161

Built
2001
24 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
206 ft
3 main spans
Daily traffic
91
2023 count
Owner
County
County Highway Agency

About this bridge

Local over Boyer River is a prestressed concrete stringer/multi-beam or girder carrying Local over Boyer River in Crawford County, Iowa. It was built in 2001, so it is 24 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 91 vehicles a day, roughly 16% of them trucks, projected to reach 91 by 2043. The structure is 206 ft (62.8 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLocal
CrossesBoyer River
Location084392603
RouteCounty Highway 0
StateIowa
Coordinates42.06568, -95.34473
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length206 ft (62.8 m)
Longest span102 ft (31.1 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91 (2023)
Projected traffic91 by 2043
Trucks16%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Boyer River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Local over 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 Local over Boyer River carry?

About 91 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Local over Boyer River?

The structure is 206 ft (62.8 m) long with a longest span of 102 ft (31.1 m) and a deck 33 ft wide.

Who owns Local over Boyer River?

It is owned by the County Highway Agency.