US Bridges

HWY 215 over Small Natural Stream

Fair

Hardin County, Iowa · 087192902 · Structure no. 000000000027290

Built
1947
78 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
31 ft
1 main span
Daily traffic
894
2022 count
Owner
County
County Highway Agency

About this bridge

HWY 215 over Small Natural Stream is a concrete slab carrying HWY 215 over Small Natural Stream in Hardin County, Iowa. It was built in 1947, so it is 78 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 894 vehicles a day, roughly 18% of them trucks, projected to reach 894 by 2044. The structure is 31 ft (9.4 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesHWY 215
CrossesSmall Natural Stream
Location087192902
RouteCounty Highway 0
CountyHardin County
StateIowa
Coordinates42.32375, -93.09932
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.3 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic894 (2022)
Projected traffic894 by 2044
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$604,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY 215 over Small Natural Stream built?

It was built in 1947, making it 78 years old in 2025.

What condition is HWY 215 over Small Natural Stream 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 HWY 215 over Small Natural Stream carry?

About 894 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is HWY 215 over Small Natural Stream?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 35 ft wide.

Who owns HWY 215 over Small Natural Stream?

It is owned by the County Highway Agency.