US Bridges

Side Ditch Ent over Side Ditch

PoorPosted for load

Lyon County, Iowa · 098471002 · Structure no. 000000000229030

Built
1900
125 years old, rebuilt 1974
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
47 ft
3 main spans
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

Side Ditch Ent over Side Ditch is a wood or timber stringer/multi-beam or girder carrying Side Ditch Ent over Side Ditch in Lyon County, Iowa. It was built in 1900 and reconstructed in 1974, so it is 125 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 10 vehicles a day, projected to reach 10 by 2044. The structure is 47 ft (14.3 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSide Ditch Ent
CrossesSide Ditch
Location098471002
RouteCounty Highway 0
StateIowa
Coordinates43.32006, -96.39041
Functional classRural Minor Collector

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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating8 US tons
Inventory rating6.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length47 ft (14.3 m)
Longest span16 ft (4.9 m)
Deck width20 ft (6 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2044
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 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 Side Ditch Ent over Side Ditch built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1974.

What condition is Side Ditch Ent over Side 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 July 2024.

How much traffic does Side Ditch Ent over Side Ditch carry?

About 10 vehicles per day (2022 count).

How long is Side Ditch Ent over Side Ditch?

The structure is 47 ft (14.3 m) long with a longest span of 16 ft (4.9 m) and a deck 20 ft wide.

Who owns Side Ditch Ent over Side Ditch?

It is owned by the County Highway Agency.