US Bridges

184th Lane over Steer Creek

Fair

Harrison County, Iowa · 080441505 · Structure no. 000000000362970

Built
1969
56 years old, rebuilt 2013
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
31 ft
1 main span
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

184th Lane over Steer Creek is a concrete stringer/multi-beam or girder carrying 184th Lane over Steer Creek in Harrison County, Iowa. It was built in 1969 and reconstructed in 2013, so it is 56 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 10 vehicles a day, projected to reach 10 by 2044. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

Location

Open in Google Maps
Carries184th Lane
CrossesSteer Creek
Location080441505
RouteCounty Highway 0
CountyHarrison County
StateIowa
Coordinates41.73922, -95.94559
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating81.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span30 ft (9 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 184th Lane over Steer Creek built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2013.

What condition is 184th Lane over Steer 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 December 2024.

How much traffic does 184th Lane over Steer Creek carry?

About 10 vehicles per day (2022 count).

How long is 184th Lane over Steer Creek?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9 m) and a deck 23 ft wide.

Who owns 184th Lane over Steer Creek?

It is owned by the County Highway Agency.