US Bridges

US 30 over Boyer Rvr & Cc RR & Road

Fair

Harrison County, Iowa · 0.3 Mi. E of Ia 127 · Structure no. 000000000027431

Built
1973
52 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
782 ft
9 main spans
Daily traffic
5,900
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 over Boyer Rvr & Cc RR & Road is a prestressed concrete stringer/multi-beam or girder carrying US 30 over Boyer Rvr & Cc RR & Road in Harrison County, Iowa. It was built in 1973, so it is 52 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 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 5,900 vehicles a day, roughly 18% of them trucks, projected to reach 5,900 by 2043. The structure is 782 ft (238.4 m) long and 48 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesUS 30
CrossesBoyer Rvr & Cc RR & Road
Location0.3 Mi. E of Ia 127
RouteU.S. Route 30
CountyHarrison County
StateIowa
Coordinates41.64301, -95.78454
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating89.5 US tons
Inventory rating33.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length782 ft (238.4 m)
Longest span96 ft (29.3 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2022)
Projected traffic5,900 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 30 over Boyer Rvr & Cc RR & Road built?

It was built in 1973, making it 52 years old in 2025.

What condition is US 30 over Boyer Rvr & Cc RR & Road 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 August 2023.

How much traffic does US 30 over Boyer Rvr & Cc RR & Road carry?

About 5,900 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is US 30 over Boyer Rvr & Cc RR & Road?

The structure is 782 ft (238.4 m) long with a longest span of 96 ft (29.3 m) and a deck 48 ft wide.

Who owns US 30 over Boyer Rvr & Cc RR & Road?

It is owned by the State Highway Agency.