US Bridges

I 29 NB over West Broadway

Good

Pottawattamie County, Iowa · At JCT US 6 & I-480 · Structure no. 000000000044791

Built
2023
2 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
237 ft
3 main spans
Daily traffic
4,450
2022 count
Owner
State
State Highway Agency

About this bridge

I 29 NB over West Broadway is a prestressed concrete stringer/multi-beam or girder carrying I 29 NB over West Broadway in Pottawattamie County, Iowa. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,450 vehicles a day, roughly 23% of them trucks, projected to reach 4,450 by 2044. The structure is 237 ft (72.3 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 29 NB
CrossesWest Broadway
LocationAt JCT US 6 & I-480
RouteInterstate 29
CountyPottawattamie County
StateIowa
Coordinates41.2616, -95.90794
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length237 ft (72.3 m)
Longest span117 ft (35.7 m)
Deck width51 ft (15.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,450 (2022)
Projected traffic4,450 by 2044
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 29 NB over West Broadway built?

It was built in 2023, making it 2 years old in 2025.

What condition is I 29 NB over West Broadway 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 February 2024.

How much traffic does I 29 NB over West Broadway carry?

About 4,450 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is I 29 NB over West Broadway?

The structure is 237 ft (72.3 m) long with a longest span of 117 ft (35.7 m) and a deck 51 ft wide.

Who owns I 29 NB over West Broadway?

It is owned by the State Highway Agency.