US Bridges

I 29 SB on Ramp over South Expressway

Good

Pottawattamie County, Iowa · At Jct. Ia 192 · Structure no. 000000000700670

Built
2020
5 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
292 ft
3 main spans
Daily traffic
4,570
2022 count
Owner
State
State Highway Agency

About this bridge

I 29 SB on Ramp over South Expressway is a prestressed concrete stringer/multi-beam or girder carrying I 29 SB on Ramp over South Expressway in Pottawattamie County, Iowa. It was built in 2020, so it is 5 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 4,570 vehicles a day, roughly 13% of them trucks, projected to reach 4,570 by 2044. The structure is 292 ft (89 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 29 SB on Ramp
CrossesSouth Expressway
LocationAt Jct. Ia 192
RouteInterstate 80
CountyPottawattamie County
StateIowa
Coordinates41.23183, -95.85177
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 inspectionNovember 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 length292 ft (89 m)
Longest span157 ft (47.9 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,570 (2022)
Projected traffic4,570 by 2044
Trucks13%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 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 I 29 SB on Ramp over South Expressway built?

It was built in 2020, making it 5 years old in 2025.

What condition is I 29 SB on Ramp over South Expressway 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 November 2024.

How much traffic does I 29 SB on Ramp over South Expressway carry?

About 4,570 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is I 29 SB on Ramp over South Expressway?

The structure is 292 ft (89 m) long with a longest span of 157 ft (47.9 m) and a deck 31 ft wide.

Who owns I 29 SB on Ramp over South Expressway?

It is owned by the State Highway Agency.