US Bridges

29th Ave over Indian Creek

Good

Linn County, Iowa · 084063100 · Structure no. 000000000504955

Built
2008
17 years old
Condition
Good
inspected April 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
323 ft
3 main spans
Daily traffic
7,094
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

29th Ave over Indian Creek is a prestressed concrete stringer/multi-beam or girder carrying 29th Ave over Indian Creek in Linn 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 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 7,094 vehicles a day, projected to reach 7,094 by 2043. The structure is 323 ft (98.5 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries29th Ave
CrossesIndian Creek
Location084063100
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates42.0505, -91.59656
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.4 US tons
Inventory rating37.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length323 ft (98.5 m)
Longest span111 ft (33.8 m)
Deck width41 ft (12.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,094 (2022)
Projected traffic7,094 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 29th Ave over Indian Creek built?

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

What condition is 29th Ave over Indian Creek 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 April 2022.

How much traffic does 29th Ave over Indian Creek carry?

About 7,094 vehicles per day (2022 count).

How long is 29th Ave over Indian Creek?

The structure is 323 ft (98.5 m) long with a longest span of 111 ft (33.8 m) and a deck 41 ft wide.

Who owns 29th Ave over Indian Creek?

It is owned by the City or Municipal Highway Agency.