US Bridges

Ia 127 & 183 over Steer Creek

Fair

Harrison County, Iowa · 0.5 Mi. E of Ia 183 · Structure no. 000000000027720

Built
1968
57 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
920
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 127 & 183 over Steer Creek is a concrete continuous slab carrying Ia 127 & 183 over Steer Creek in Harrison County, Iowa. It was built in 1968, so it is 57 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 920 vehicles a day, roughly 10% of them trucks, projected to reach 920 by 2043. The structure is 134 ft (40.8 m) long and 47 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesIa 127 & 183
CrossesSteer Creek
Location0.5 Mi. E of Ia 183
RouteState Highway 127
CountyHarrison County
StateIowa
Coordinates41.7095, -95.9559
Functional classRural Minor Arterial

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 inspectionSeptember 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 geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.4 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span51 ft (15.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic920 (2022)
Projected traffic920 by 2043
Trucks10%
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

OwnerState Highway Agency
Maintained byState 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 Ia 127 & 183 over Steer Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Ia 127 & 183 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 September 2023.

How much traffic does Ia 127 & 183 over Steer Creek carry?

About 920 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Ia 127 & 183 over Steer Creek?

The structure is 134 ft (40.8 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.

Who owns Ia 127 & 183 over Steer Creek?

It is owned by the State Highway Agency.