US Bridges

Filbert Avenue over West Fork 102 River

PoorPosted for load

Adams County, Iowa · 071343102 · Structure no. 000000000059171

Built
1984
41 years old
Condition
Poor
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
5
2022 count
Owner
County
County Highway Agency

About this bridge

Filbert Avenue over West Fork 102 River is a steel stringer/multi-beam or girder carrying Filbert Avenue over West Fork 102 River in Adams County, Iowa. It was built in 1984, so it is 41 years old, younger 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 5 vehicles a day, projected to reach 5 by 2044. The structure is 51 ft (15.5 m) long and 17 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFilbert Avenue
CrossesWest Fork 102 River
Location071343102
RouteCounty Highway 0
StateIowa
Coordinates40.913, -94.81479
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating10 US tons
Inventory rating5 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width17 ft (5.3 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 by 2044
Trucks0%
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$634,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Filbert Avenue over West Fork 102 River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Filbert Avenue over West Fork 102 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 January 2024.

How much traffic does Filbert Avenue over West Fork 102 River carry?

About 5 vehicles per day (2022 count).

How long is Filbert Avenue over West Fork 102 River?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 17 ft wide.

Who owns Filbert Avenue over West Fork 102 River?

It is owned by the County Highway Agency.