US Bridges

29th ST DR SE over Indian Creek

Fair

Linn County, Iowa · 000000000 · Structure no. 000000000503000

Built
1972
53 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
212 ft
4 main spans
Daily traffic
5,800
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

29th ST DR SE over Indian Creek is a prestressed concrete stringer/multi-beam or girder carrying 29th ST DR SE over Indian Creek in Linn County, Iowa. It was built in 1972, so it is 53 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,800 vehicles a day, projected to reach 5,800 by 2043. The structure is 212 ft (64.6 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries29th ST DR SE
CrossesIndian Creek
Location000000000
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates42.00606, -91.62983
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36.6 US tons
Inventory rating21.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length212 ft (64.6 m)
Longest span70 ft (21.3 m)
Deck width41 ft (12.5 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2021)
Projected traffic5,800 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 29th ST DR SE over Indian Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is 29th ST DR SE over Indian Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does 29th ST DR SE over Indian Creek carry?

About 5,800 vehicles per day (2021 count).

How long is 29th ST DR SE over Indian Creek?

The structure is 212 ft (64.6 m) long with a longest span of 70 ft (21.3 m) and a deck 41 ft wide.

Who owns 29th ST DR SE over Indian Creek?

It is owned by the City or Municipal Highway Agency.