US Bridges

B30 150th ST over Flood Creek

Good

Floyd County, Iowa · 096181401 · Structure no. 000000000024911

Built
2016
9 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
153 ft
3 main spans
Daily traffic
1,159
2022 count
Owner
County
County Highway Agency

About this bridge

B30 150th ST over Flood Creek is a concrete continuous slab carrying B30 150th ST over Flood Creek in Floyd County, Iowa. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,159 vehicles a day, roughly 11% of them trucks, projected to reach 1,159 by 2044. The structure is 153 ft (46.6 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesB30 150th ST
CrossesFlood Creek
Location096181401
RouteCounty Highway 0
CountyFloyd County
StateIowa
Coordinates43.14084, -92.93897
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length153 ft (46.6 m)
Longest span59 ft (18 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,159 (2022)
Projected traffic1,159 by 2044
Trucks11%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was B30 150th ST over Flood Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is B30 150th ST over Flood 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 March 2024.

How much traffic does B30 150th ST over Flood Creek carry?

About 1,159 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is B30 150th ST over Flood Creek?

The structure is 153 ft (46.6 m) long with a longest span of 59 ft (18 m) and a deck 33 ft wide.

Who owns B30 150th ST over Flood Creek?

It is owned by the County Highway Agency.