US Bridges

7th Ave over Indian Creek

Fair

Linn County, Iowa · 083070100 · Structure no. 000000000033521

Built
1994
31 years old
Condition
Fair
inspected April 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
206 ft
3 main spans
Daily traffic
20,679
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

7th Ave over Indian Creek is a prestressed concrete stringer/multi-beam or girder carrying 7th Ave over Indian Creek in Linn County, Iowa. It was built in 1994, so it is 31 years old, younger 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 6 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 20,679 vehicles a day, projected to reach 20,679 by 2043. The structure is 206 ft (62.8 m) long and 91 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries7th Ave
CrossesIndian Creek
Location083070100
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates42.031, -91.61209
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum 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 rating52.1 US tons
Inventory rating31.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length206 ft (62.8 m)
Longest span92 ft (28 m)
Deck width91 ft (27.7 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,679 (2022)
Projected traffic20,679 by 2043
Trucks0%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 7th Ave over Indian Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is 7th Ave 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 2022.

How much traffic does 7th Ave over Indian Creek carry?

About 20,679 vehicles per day (2022 count).

How long is 7th Ave over Indian Creek?

The structure is 206 ft (62.8 m) long with a longest span of 92 ft (28 m) and a deck 91 ft wide.

Who owns 7th Ave over Indian Creek?

It is owned by the City or Municipal Highway Agency.