US Bridges

CO RD over Boyer River

FairPosted for load

Crawford County, Iowa · 084381801 · Structure no. 000000000003616

Built
1949
76 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
152 ft
3 main spans
Daily traffic
121
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD over Boyer River is a steel continuous stringer/multi-beam or girder carrying CO RD over Boyer River in Crawford County, Iowa. It was built in 1949, so it is 76 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 121 vehicles a day, roughly 16% of them trucks, projected to reach 121 by 2044. The structure is 152 ft (46.3 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCO RD
CrossesBoyer River
Location084381801
RouteCity Street 0
CountyCrawford County
StateIowa
Coordinates42.09435, -95.31155
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating27.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length152 ft (46.3 m)
Longest span58 ft (17.7 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic121 (2022)
Projected traffic121 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 CO RD over Boyer River built?

It was built in 1949, making it 76 years old in 2025.

What condition is CO RD over Boyer River 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 CO RD over Boyer River carry?

About 121 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is CO RD over Boyer River?

The structure is 152 ft (46.3 m) long with a longest span of 58 ft (17.7 m) and a deck 24 ft wide.

Who owns CO RD over Boyer River?

It is owned by the County Highway Agency.