US Bridges

US 71 over UP RR & RD

Fair

Carroll County, Iowa · 0.2 Mi. S of Jct. U.S. 30 · Structure no. 000000000017201

Built
1988
37 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
460 ft
6 main spans
Daily traffic
5,600
2022 count
Owner
State
State Highway Agency

About this bridge

US 71 over UP RR & RD is a prestressed concrete stringer/multi-beam or girder carrying US 71 over UP RR & RD in Carroll County, Iowa. It was built in 1988, so it is 37 years old, younger 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 5,600 vehicles a day, roughly 8% of them trucks, projected to reach 5,600 by 2044. The structure is 460 ft (140.2 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesUS 71
CrossesUP RR & RD
Location0.2 Mi. S of Jct. U.S. 30
RouteU.S. Route 71
CountyCarroll County
StateIowa
Coordinates42.06791, -94.87857
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating85 US tons
Inventory rating50.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length460 ft (140.2 m)
Longest span97 ft (29.6 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2022)
Projected traffic5,600 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 71 over UP RR & RD built?

It was built in 1988, making it 37 years old in 2025.

What condition is US 71 over UP RR & RD 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 October 2024.

How much traffic does US 71 over UP RR & RD carry?

About 5,600 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is US 71 over UP RR & RD?

The structure is 460 ft (140.2 m) long with a longest span of 97 ft (29.6 m) and a deck 43 ft wide.

Who owns US 71 over UP RR & RD?

It is owned by the State Highway Agency.