US Bridges

Local over Drainage Ditch

PoorPosted for load

Winnebago County, Iowa · 098240301 · Structure no. 000000000344360

Built
1928
97 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
82
2021 count
Owner
County
County Highway Agency

About this bridge

Local over Drainage Ditch is a steel stringer/multi-beam or girder carrying Local over Drainage Ditch in Winnebago County, Iowa. It was built in 1928, so it is 97 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 4 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 other load-capacity restriction.

It carries about 82 vehicles a day, projected to reach 82 by 2043. The structure is 26 ft (7.9 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLocal
CrossesDrainage Ditch
Location098240301
RouteCounty Highway 0
StateIowa
Coordinates43.3424, -93.66396
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.7 US tons
Inventory rating24.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2021)
Projected traffic82 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$782,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Drainage Ditch built?

It was built in 1928, making it 97 years old in 2025.

What condition is Local over Drainage Ditch 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 2023.

How much traffic does Local over Drainage Ditch carry?

About 82 vehicles per day (2021 count).

How long is Local over Drainage Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 21 ft wide.

Who owns Local over Drainage Ditch?

It is owned by the County Highway Agency.