US Bridges

24th ST over I 80 I 29 US 6

Good

Pottawattamie County, Iowa · 1.7 Mi. E of NE St. Line · Structure no. 000000000044691

Built
2008
17 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
359 ft
2 main spans
Daily traffic
8,132
2023 count
Owner
State
State Highway Agency

About this bridge

24th ST over I 80 I 29 US 6 is a steel continuous stringer/multi-beam or girder carrying 24th ST over I 80 I 29 US 6 in Pottawattamie County, Iowa. It was built in 2008, so it is 17 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 8,132 vehicles a day, roughly 11% of them trucks, projected to reach 8,132 by 2043. The structure is 359 ft (109.3 m) long and 106 ft wide.

Carries24th ST
CrossesI 80 I 29 US 6
Location1.7 Mi. E of NE St. Line
RouteCity Street 0
StateIowa
Coordinates41.23188, -95.87916
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum 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

MaterialSteel Continuous
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length359 ft (109.3 m)
Longest span178 ft (54.4 m)
Deck width106 ft (32.2 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,132 (2023)
Projected traffic8,132 by 2043
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 24th ST over I 80 I 29 US 6 built?

It was built in 2008, making it 17 years old in 2025.

What condition is 24th ST over I 80 I 29 US 6 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 September 2024.

How much traffic does 24th ST over I 80 I 29 US 6 carry?

About 8,132 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is 24th ST over I 80 I 29 US 6?

The structure is 359 ft (109.3 m) long with a longest span of 178 ft (54.4 m) and a deck 106 ft wide.

Who owns 24th ST over I 80 I 29 US 6?

It is owned by the State Highway Agency.