US Bridges

Local over Broadhorn Creek

PoorPosted for load

Warren County, Iowa · 074250504 · Structure no. 000000000333340

Built
1915
110 years old, rebuilt 1955
Condition
Poor
inspected September 2024
Type
Truss - Thru
Steel
Length
92 ft
1 main span
Daily traffic
46
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Broadhorn Creek is a steel truss - thru carrying Local over Broadhorn Creek in Warren County, Iowa. It was built in 1915 and reconstructed in 1955, so it is 110 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 46 vehicles a day, projected to reach 46 by 2044. The structure is 92 ft (28 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLocal
CrossesBroadhorn Creek
Location074250504
RouteCounty Highway 0
StateIowa
Coordinates41.2367, -93.77041
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionSeptember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating4.1 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46 (2022)
Projected traffic46 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$950,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Broadhorn Creek built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1955.

What condition is Local over Broadhorn 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 September 2024.

How much traffic does Local over Broadhorn Creek carry?

About 46 vehicles per day (2022 count).

How long is Local over Broadhorn Creek?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 18 ft wide.

Who owns Local over Broadhorn Creek?

It is owned by the County Highway Agency.