US Bridges

Local over Ioway Creek

FairPosted for load

Boone County, Iowa · 084250101 · Structure no. 000000000077600

Built
1952
73 years old, rebuilt 2017
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
126 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Ioway Creek is a concrete continuous slab carrying Local over Ioway Creek in Boone County, Iowa. It was built in 1952 and reconstructed in 2017, so it is 73 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, projected to reach 100 by 2044. The structure is 126 ft (38.4 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal
CrossesIoway Creek
Location084250101
RouteCounty Highway 0
CountyBoone County
StateIowa
Coordinates42.12308, -93.71531
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
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 alignment7: Better than present minimum criteria
Operating rating34.9 US tons
Inventory rating20.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length126 ft (38.4 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic100 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Local over Ioway Creek built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 2017.

What condition is Local over Ioway 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 May 2024.

How much traffic does Local over Ioway Creek carry?

About 100 vehicles per day (2022 count).

How long is Local over Ioway Creek?

The structure is 126 ft (38.4 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns Local over Ioway Creek?

It is owned by the County Highway Agency.