US Bridges

1290 Echo Ave over Boone River

PoorPosted for load

Hancock County, Iowa · 094262302 · Structure no. 000000000172960

Built
1969
56 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
115 ft
5 main spans
Daily traffic
20
2021 count
Owner
County
County Highway Agency

About this bridge

1290 Echo Ave over Boone River is a wood or timber stringer/multi-beam or girder carrying 1290 Echo Ave over Boone River in Hancock County, Iowa. It was built in 1969, so it is 56 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 3 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: posted for load restriction.

It carries about 20 vehicles a day, roughly 30% of them trucks, projected to reach 20 by 2044. The structure is 115 ft (35.1 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries1290 Echo Ave
CrossesBoone River
Location094262302
RouteCounty Highway 0
StateIowa
Coordinates42.95101, -93.89205
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating12.7 US tons
Inventory rating9.8 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadUnknown
Structure length115 ft (35.1 m)
Longest span23 ft (7 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2021)
Projected traffic20 by 2044
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

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

Frequently asked questions

When was 1290 Echo Ave over Boone River built?

It was built in 1969, making it 56 years old in 2025.

What condition is 1290 Echo Ave over Boone River 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 March 2024.

How much traffic does 1290 Echo Ave over Boone River carry?

About 20 vehicles per day (2021 count), of which roughly 30% are trucks.

How long is 1290 Echo Ave over Boone River?

The structure is 115 ft (35.1 m) long with a longest span of 23 ft (7 m) and a deck 20 ft wide.

Who owns 1290 Echo Ave over Boone River?

It is owned by the County Highway Agency.