US Bridges

Basswood RD over I-29

Good

Pottawattamie County, Iowa · 2.6 Mi. S of Jct. Ia 92 · Structure no. 000000000044570

Built
1968
57 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
271 ft
4 main spans
Daily traffic
37
2022 count
Owner
State
State Highway Agency

About this bridge

Basswood RD over I-29 is a steel continuous stringer/multi-beam or girder carrying Basswood RD over I-29 in Pottawattamie County, Iowa. It was built in 1968, so it is 57 years old, older 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 37 vehicles a day, projected to reach 37 by 2044. The structure is 271 ft (82.6 m) long and 27 ft wide.

CarriesBasswood RD
CrossesI-29
Location2.6 Mi. S of Jct. Ia 92
RouteCity Street 0
StateIowa
Coordinates41.18962, -95.82405
Functional classRural Local

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.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating53.9 US tons
Inventory rating32.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length271 ft (82.6 m)
Longest span83 ft (25.3 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37 (2022)
Projected traffic37 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Basswood RD over I-29 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Basswood RD 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 Basswood RD over I-29 carry?

About 37 vehicles per day (2022 count).

How long is Basswood RD over I-29?

The structure is 271 ft (82.6 m) long with a longest span of 83 ft (25.3 m) and a deck 27 ft wide.

Who owns Basswood RD over I-29?

It is owned by the State Highway Agency.