US Bridges

I 29 NB US 6 WB over 9th Ave

Good

Pottawattamie County, Iowa · 0.6 Mi. S of Jct. U.S. 6 · Structure no. 000000000044741

Built
2023
2 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
15,000
2022 count
Owner
State
State Highway Agency

About this bridge

I 29 NB US 6 WB over 9th Ave is a prestressed concrete stringer/multi-beam or girder carrying I 29 NB US 6 WB over 9th Ave 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 15,000 vehicles a day, roughly 14% of them trucks, projected to reach 15,000 by 2044. The structure is 108 ft (32.9 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 29 NB US 6 WB
Crosses9th Ave
Location0.6 Mi. S of Jct. U.S. 6
RouteInterstate 29
CountyPottawattamie County
StateIowa
Coordinates41.25349, -95.90672
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 geometry7: Better than present minimum 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 spans1
Design loadHL 93
Structure length108 ft (32.9 m)
Longest span105 ft (32 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2022)
Projected traffic15,000 by 2044
Trucks14%
Lanes on structure3
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 byLocal Park, Forest, or Reservation 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 US 6 WB over 9th Ave built?

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

What condition is I 29 NB US 6 WB over 9th Ave 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 US 6 WB over 9th Ave carry?

About 15,000 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is I 29 NB US 6 WB over 9th Ave?

The structure is 108 ft (32.9 m) long with a longest span of 105 ft (32 m) and a deck 63 ft wide.

Who owns I 29 NB US 6 WB over 9th Ave?

It is owned by the State Highway Agency and maintained by the Local Park, Forest, or Reservation Agency.