US Bridges

Local over Troublesome Creek

FairPosted for load

Audubon County, Iowa · 078340404 · Structure no. 000000000066340

Built
1925
100 years old, rebuilt 1994
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel
Length
61 ft
1 main span
Daily traffic
46
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Troublesome Creek is a steel truss - thru carrying Local over Troublesome Creek in Audubon County, Iowa. It was built in 1925 and reconstructed in 1994, so it is 100 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 46 vehicles a day, roughly 17% of them trucks, projected to reach 46 by 2043. The structure is 61 ft (18.6 m) long and 17 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal
CrossesTroublesome Creek
Location078340404
RouteCounty Highway 0
CountyAudubon County
StateIowa
Coordinates41.58069, -94.77731
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating17.1 US tons
Inventory rating10.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span60 ft (18.3 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46 (2022)
Projected traffic46 by 2043
Trucks17%
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 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 Troublesome Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1994.

What condition is Local over Troublesome Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Local over Troublesome Creek carry?

About 46 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Local over Troublesome Creek?

The structure is 61 ft (18.6 m) long with a longest span of 60 ft (18.3 m) and a deck 17 ft wide.

Who owns Local over Troublesome Creek?

It is owned by the County Highway Agency.