US Bridges

Local Road over Trout Creek

PoorPosted for load

Winneshiek County, Iowa · 097091301 · Structure no. 000000000346980

Built
1915
110 years old
Condition
Poor
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
33
2022 count
Owner
County
County Highway Agency

About this bridge

Local Road over Trout Creek is a steel stringer/multi-beam or girder carrying Local Road over Trout Creek in Winneshiek County, Iowa. It was built in 1915, 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 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. Its operating status is: posted for load restriction.

It carries about 33 vehicles a day, projected to reach 33 by 2043. The structure is 30 ft (9.1 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLocal Road
CrossesTrout Creek
Location097091301
RouteCounty Highway 0
StateIowa
Coordinates43.22661, -91.85666
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.6 US tons
Inventory rating27.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2022)
Projected traffic33 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local Road over Trout Creek built?

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

What condition is Local Road over Trout 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 November 2023.

How much traffic does Local Road over Trout Creek carry?

About 33 vehicles per day (2022 count).

How long is Local Road over Trout Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 16 ft wide.

Who owns Local Road over Trout Creek?

It is owned by the County Highway Agency.