US Bridges

FM & 170th ST over E.Picayune Creek

Fair

Harrison County, Iowa · 080410305 · Structure no. 000000000178412

Built
1978
47 years old, rebuilt 2021
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
102 ft
3 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

FM & 170th ST over E.Picayune Creek is a steel continuous stringer/multi-beam or girder carrying FM & 170th ST over E.Picayune Creek in Harrison County, Iowa. It was built in 1978 and reconstructed in 2021, so it is 47 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.

It carries about 15 vehicles a day, projected to reach 15 by 2044. The structure is 102 ft (31.1 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM & 170th ST
CrossesE.Picayune Creek
Location080410305
RouteCounty Highway 0
CountyHarrison County
StateIowa
Coordinates41.76527, -95.60616
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.1 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckCorrugated steel
Main spans3 (+1 approach)
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span39 ft (11.9 m)
Deck width22 ft (6.6 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2044
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM & 170th ST over E.Picayune Creek built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2021.

What condition is FM & 170th ST over E.Picayune 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 February 2024.

How much traffic does FM & 170th ST over E.Picayune Creek carry?

About 15 vehicles per day (2022 count).

How long is FM & 170th ST over E.Picayune Creek?

The structure is 102 ft (31.1 m) long with a longest span of 39 ft (11.9 m) and a deck 22 ft wide.

Who owns FM & 170th ST over E.Picayune Creek?

It is owned by the County Highway Agency.