US Bridges

Local over Trib of Weldon River

PoorPosted for load

Decatur County, Iowa · 068241702 · Structure no. 000000000136900

Built
1910
115 years old, rebuilt 1984
Condition
Poor
inspected December 2023
Type
Truss - Thru
Steel
Length
52 ft
1 main span
Daily traffic
5
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Trib of Weldon River is a steel truss - thru carrying Local over Trib of Weldon River in Decatur County, Iowa. It was built in 1910 and reconstructed in 1984, so it is 115 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 5 vehicles a day, projected to reach 5 by 2043. The structure is 52 ft (15.9 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLocal
CrossesTrib of Weldon River
Location068241702
RouteCounty Highway 0
StateIowa
Coordinates40.69318, -93.65114
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
Deck7 GoodSome minor problems.
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 inspectionDecember 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating6.6 US tons
Inventory rating3.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length52 ft (15.9 m)
Longest span50 ft (15.2 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Local over Trib of Weldon River built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1984.

What condition is Local over Trib of Weldon 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 December 2023.

How much traffic does Local over Trib of Weldon River carry?

About 5 vehicles per day (2022 count).

How long is Local over Trib of Weldon River?

The structure is 52 ft (15.9 m) long with a longest span of 50 ft (15.2 m) and a deck 21 ft wide.

Who owns Local over Trib of Weldon River?

It is owned by the County Highway Agency.