US Bridges

160th ST over Lizard Creek

Good

Webster County, Iowa · 089300301 · Structure no. 000000000343461

Built
2011
14 years old
Condition
Good
inspected October 2022
Type
Slab
Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
34
2022 count
Owner
County
County Highway Agency

About this bridge

160th ST over Lizard Creek is a concrete continuous slab carrying 160th ST over Lizard Creek in Webster 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 34 vehicles a day, projected to reach 34 by 2042. The structure is 143 ft (43.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries160th ST
CrossesLizard Creek
Location089300301
RouteCounty Highway 0
StateIowa
Coordinates42.55872, -94.37234
Functional classRural Minor 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 inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum 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 length143 ft (43.6 m)
Longest span55 ft (16.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)
Projected traffic34 by 2042
Trucks0%
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$30,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 160th ST over Lizard Creek built?

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

What condition is 160th ST over Lizard 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 October 2022.

How much traffic does 160th ST over Lizard Creek carry?

About 34 vehicles per day (2022 count).

How long is 160th ST over Lizard Creek?

The structure is 143 ft (43.6 m) long with a longest span of 55 ft (16.8 m) and a deck 27 ft wide.

Who owns 160th ST over Lizard Creek?

It is owned by the County Highway Agency.