US Bridges

Nettle over Stream

FairPosted for load

Worth County, Iowa · 098202902 · Structure no. 000000000355710

Built
1955
70 years old
Condition
Fair
inspected December 2023
Type
Channel Beam
Concrete
Length
36 ft
1 main span
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

Nettle over Stream is a concrete channel beam carrying Nettle over Stream in Worth County, Iowa. It was built in 1955, so it is 70 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 35 vehicles a day, projected to reach 35 by 2043. The structure is 36 ft (11 m) long and 23 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesNettle
CrossesStream
Location098202902
RouteCounty Highway 0
CountyWorth County
StateIowa
Coordinates43.27792, -93.24079
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
Deck7 GoodSome minor problems.
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 inspectionDecember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating18.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width23 ft (6.9 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2022)
Projected traffic35 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Nettle over Stream built?

It was built in 1955, making it 70 years old in 2025.

What condition is Nettle over Stream 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 December 2023.

How much traffic does Nettle over Stream carry?

About 35 vehicles per day (2022 count).

How long is Nettle over Stream?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 23 ft wide.

Who owns Nettle over Stream?

It is owned by the County Highway Agency.