US Bridges

155th St. over Branch of Mineral Creek

Fair

Jones County, Iowa · 085022205 · Structure no. 000000000208070

Built
1941
84 years old, rebuilt 2016
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
41 ft
2 main spans
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

155th St. over Branch of Mineral Creek is a wood or timber stringer/multi-beam or girder carrying 155th St. over Branch of Mineral Creek in Jones County, Iowa. It was built in 1941 and reconstructed in 2016, so it is 84 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 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 11 vehicles a day, projected to reach 11 by 2043. The structure is 41 ft (12.5 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries155th St.
CrossesBranch of Mineral Creek
Location085022205
RouteCounty Highway 0
CountyJones County
StateIowa
Coordinates42.15804, -91.06893
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.5 US tons
Inventory rating33.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span23 ft (7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 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 155th St. over Branch of Mineral Creek built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 2016.

What condition is 155th St. over Branch of Mineral 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 155th St. over Branch of Mineral Creek carry?

About 11 vehicles per day (2022 count).

How long is 155th St. over Branch of Mineral Creek?

The structure is 41 ft (12.5 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.

Who owns 155th St. over Branch of Mineral Creek?

It is owned by the County Highway Agency.