US Bridges

US 275 NB Ia 92 WB over I 29

Good

Pottawattamie County, Iowa · At Jct. I-29 · Structure no. 000000000700190

Built
2015
10 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
479 ft
4 main spans
Daily traffic
9,050
2022 count
Owner
State
State Highway Agency

About this bridge

US 275 NB Ia 92 WB over I 29 is a prestressed concrete stringer/multi-beam or girder carrying US 275 NB Ia 92 WB over I 29 in Pottawattamie County, Iowa. It was built in 2015, so it is 10 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 9,050 vehicles a day, roughly 7% of them trucks, projected to reach 9,050 by 2044. The structure is 479 ft (146 m) long and 47 ft wide.

CarriesUS 275 NB Ia 92 WB
CrossesI 29
LocationAt Jct. I-29
RouteU.S. Route 275
StateIowa
Coordinates41.22103, -95.83168
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length479 ft (146 m)
Longest span151 ft (46 m)
Deck width47 ft (14.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,050 (2022)
Projected traffic9,050 by 2044
Trucks7%
Lanes on structure3
Traffic directionOne-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 275 NB Ia 92 WB over I 29 built?

It was built in 2015, making it 10 years old in 2025.

What condition is US 275 NB Ia 92 WB over I 29 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 August 2024.

How much traffic does US 275 NB Ia 92 WB over I 29 carry?

About 9,050 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is US 275 NB Ia 92 WB over I 29?

The structure is 479 ft (146 m) long with a longest span of 151 ft (46 m) and a deck 47 ft wide.

Who owns US 275 NB Ia 92 WB over I 29?

It is owned by the State Highway Agency.