US Bridges

Fm/Austin Ave over Soldier River

Fair

Harrison County, Iowa · 080451206 · Structure no. 000000000360790

Built
1957
68 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
223 ft
3 main spans
Daily traffic
497
2023 count
Owner
County
County Highway Agency

About this bridge

Fm/Austin Ave over Soldier River is a steel continuous stringer/multi-beam or girder carrying Fm/Austin Ave over Soldier River in Harrison County, Iowa. It was built in 1957, so it is 68 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 497 vehicles a day, roughly 29% of them trucks, projected to reach 497 by 2043. The structure is 223 ft (68 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesFm/Austin Ave
CrossesSoldier River
Location080451206
RouteCounty Highway 0
CountyHarrison County
StateIowa
Coordinates41.75209, -96.03256
Functional classRural Major 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.4 US tons
Inventory rating42.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length223 ft (68 m)
Longest span100 ft (30.5 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic497 (2023)
Projected traffic497 by 2043
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Fm/Austin Ave over Soldier River built?

It was built in 1957, making it 68 years old in 2025.

What condition is Fm/Austin Ave over Soldier River 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 Fm/Austin Ave over Soldier River carry?

About 497 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is Fm/Austin Ave over Soldier River?

The structure is 223 ft (68 m) long with a longest span of 100 ft (30.5 m) and a deck 36 ft wide.

Who owns Fm/Austin Ave over Soldier River?

It is owned by the County Highway Agency.