US Bridges

Local over Soap Creek

PoorPosted for load

Davis County, Iowa · 070140204 · Structure no. 000000000135540

Built
1920
105 years old
Condition
Poor
inspected May 2023
Type
Truss - Thru
Steel
Length
142 ft
1 main span
Daily traffic
110
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Soap Creek is a steel truss - thru carrying Local over Soap Creek in Davis County, Iowa. It was built in 1920, so it is 105 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 110 vehicles a day, projected to reach 110 by 2043. The structure is 142 ft (43.3 m) long and 16 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesLocal
CrossesSoap Creek
Location070140204
RouteCounty Highway 0
StateIowa
Coordinates40.88757, -92.4431
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.4 US tons
Inventory rating15.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length142 ft (43.3 m)
Longest span90 ft (27.4 m)
Deck width16 ft (5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2022)
Projected traffic110 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Local over Soap Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Local over Soap Creek 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 May 2023.

How much traffic does Local over Soap Creek carry?

About 110 vehicles per day (2022 count).

How long is Local over Soap Creek?

The structure is 142 ft (43.3 m) long with a longest span of 90 ft (27.4 m) and a deck 16 ft wide.

Who owns Local over Soap Creek?

It is owned by the County Highway Agency.