US Bridges

D 30 (180th St) over Creek

Good

Woodbury County, Iowa · 088471301 · Structure no. 000000000354371

Built
2011
14 years old
Condition
Good
inspected July 2022
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
159
2022 count
Owner
County
County Highway Agency

About this bridge

D 30 (180th St) over Creek is a concrete continuous slab carrying D 30 (180th St) over Creek in Woodbury County, Iowa. It was built in 2011, so it is 14 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 159 vehicles a day, roughly 23% of them trucks, projected to reach 159 by 2043. The structure is 81 ft (24.7 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesD 30 (180th St)
CrossesCreek
Location088471301
RouteCounty Highway 0
CountyWoodbury County
StateIowa
Coordinates42.44571, -96.27014
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal 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 traffic159 (2022)
Projected traffic159 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 D 30 (180th St) over Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is D 30 (180th St) over 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 July 2022.

How much traffic does D 30 (180th St) over Creek carry?

About 159 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is D 30 (180th St) over 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 D 30 (180th St) over Creek?

It is owned by the County Highway Agency.