US Bridges

220th St. over Branch of Silver Creek

Fair

Jones County, Iowa · 086042001 · Structure no. 000000000209281

Built
1980
45 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
84 ft
3 main spans
Daily traffic
91
2022 count
Owner
County
County Highway Agency

About this bridge

220th St. over Branch of Silver Creek is a steel stringer/multi-beam or girder carrying 220th St. over Branch of Silver Creek in Jones County, Iowa. It was built in 1980, so it is 45 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 91 vehicles a day, projected to reach 91 by 2043. The structure is 84 ft (25.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries220th St.
CrossesBranch of Silver Creek
Location086042001
RouteCounty Highway 0
CountyJones County
StateIowa
Coordinates42.25303, -91.33295
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans3
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span41 ft (12.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91 (2022)
Projected traffic91 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 220th St. over Branch of Silver Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is 220th St. over Branch of Silver 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 220th St. over Branch of Silver Creek carry?

About 91 vehicles per day (2022 count).

How long is 220th St. over Branch of Silver Creek?

The structure is 84 ft (25.6 m) long with a longest span of 41 ft (12.5 m) and a deck 24 ft wide.

Who owns 220th St. over Branch of Silver Creek?

It is owned by the County Highway Agency.