US Bridges

US 59 over Iowa 92

Fair

Pottawattamie County, Iowa · At Jct. Iowa 92 · Structure no. 000000000043340

Built
1957
68 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
152 ft
3 main spans
Daily traffic
1,420
2023 count
Owner
State
State Highway Agency

About this bridge

US 59 over Iowa 92 is a steel continuous stringer/multi-beam or girder carrying US 59 over Iowa 92 in Pottawattamie County, Iowa. It was built in 1957, so it is 68 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.

It carries about 1,420 vehicles a day, roughly 21% of them trucks, projected to reach 1,420 by 2043. The structure is 152 ft (46.3 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesUS 59
CrossesIowa 92
LocationAt Jct. Iowa 92
RouteU.S. Route 59
CountyPottawattamie County
StateIowa
Coordinates41.23237, -95.40357
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.6 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length152 ft (46.3 m)
Longest span59 ft (18 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,420 (2023)
Projected traffic1,420 by 2043
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 59 over Iowa 92 built?

It was built in 1957, making it 68 years old in 2025.

What condition is US 59 over Iowa 92 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 June 2023.

How much traffic does US 59 over Iowa 92 carry?

About 1,420 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US 59 over Iowa 92?

The structure is 152 ft (46.3 m) long with a longest span of 59 ft (18 m) and a deck 34 ft wide.

Who owns US 59 over Iowa 92?

It is owned by the State Highway Agency.