US Bridges

S23 200th Ave over Stony Fork

Poor

Lucas County, Iowa · 073221104 · Structure no. 000000000227468

Built
1969
56 years old
Condition
Poor
inspected November 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
400
2022 count
Owner
County
County Highway Agency

About this bridge

S23 200th Ave over Stony Fork is a concrete continuous culvert carrying S23 200th Ave over Stony Fork in Lucas 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 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.

It carries about 400 vehicles a day, roughly 11% of them trucks, projected to reach 400 by 2044. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesS23 200th Ave
CrossesStony Fork
Location073221104
RouteCounty Highway 0
CountyLucas County
StateIowa
Coordinates41.14435, -93.36634
Functional classRural Major 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating97.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic400 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 S23 200th Ave over Stony Fork built?

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

What condition is S23 200th Ave over Stony Fork 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 November 2024.

How much traffic does S23 200th Ave over Stony Fork carry?

About 400 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is S23 200th Ave over Stony Fork?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns S23 200th Ave over Stony Fork?

It is owned by the County Highway Agency.