US Bridges

230th ST over Br of Old Mans Creek

Good

Iowa County, Iowa · 079101001 · Structure no. 000000000189342

Built
2024
1 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
153
2022 count
Owner
County
County Highway Agency

About this bridge

230th ST over Br of Old Mans Creek is a concrete continuous slab carrying 230th ST over Br of Old Mans Creek in Iowa County, Iowa. It was built in 2024, so it is 1 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 153 vehicles a day, projected to reach 153 by 2044. The structure is 81 ft (24.7 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries230th ST
CrossesBr of Old Mans Creek
Location079101001
RouteCounty Highway 0
StateIowa
Coordinates41.67347, -91.99459
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.3 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length81 ft (24.7 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2022)
Projected traffic153 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 230th ST over Br of Old Mans Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is 230th ST over Br of Old Mans Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does 230th ST over Br of Old Mans Creek carry?

About 153 vehicles per day (2022 count).

How long is 230th ST over Br of Old Mans Creek?

The structure is 81 ft (24.7 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns 230th ST over Br of Old Mans Creek?

It is owned by the County Highway Agency.