US Bridges

473rd Ave over Jack Creek

PoorClosed to traffic

Emmet County, Iowa · 099322904 · Structure no. 000000000148720

Built
1906
119 years old, rebuilt 1973
Condition
Poor
inspected August 2024
Type
Truss - Thru
Steel
Length
62 ft
1 main span
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

473rd Ave over Jack Creek is a steel truss - thru carrying 473rd Ave over Jack Creek in Emmet County, Iowa. It was built in 1906 and reconstructed in 1973, so it is 119 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 11 vehicles a day, projected to reach 11 by 2044. The structure is 62 ft (18.9 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries473rd Ave
CrossesJack Creek
Location099322904
RouteCounty Highway 0
CountyEmmet County
StateIowa
Coordinates43.36854, -94.65195
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck0 FailedOut of service and beyond corrective action.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure0 FailedOut of service and beyond corrective action.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 473rd Ave over Jack Creek built?

It was built in 1906, making it 119 years old in 2025. It was reconstructed in 1973.

What condition is 473rd Ave over Jack Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does 473rd Ave over Jack Creek carry?

About 11 vehicles per day (2022 count).

How long is 473rd Ave over Jack Creek?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 16 ft wide.

Who owns 473rd Ave over Jack Creek?

It is owned by the County Highway Agency.