US Bridges

NB US 169 over Lizard Creek

Good

Webster County, Iowa · 0.3 Mi. S of Ia 7 · Structure no. 000000000052211

Built
2010
15 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
459 ft
3 main spans
Daily traffic
4,400
2022 count
Owner
State
State Highway Agency

About this bridge

NB US 169 over Lizard Creek is a steel stringer/multi-beam or girder carrying NB US 169 over Lizard Creek in Webster County, Iowa. It was built in 2010, so it is 15 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 4,400 vehicles a day, roughly 15% of them trucks, projected to reach 4,400 by 2044. The structure is 459 ft (139.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB US 169
CrossesLizard Creek
Location0.3 Mi. S of Ia 7
RouteU.S. Route 169
CountyWebster County
StateIowa
Coordinates42.5101, -94.22047
Functional classUrban Other Principal Arterial

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 2024
Inspection intervalevery 24 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating45.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length459 ft (139.9 m)
Longest span128 ft (39 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2022)
Projected traffic4,400 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NB US 169 over Lizard Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is NB US 169 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 July 2024.

How much traffic does NB US 169 over Lizard Creek carry?

About 4,400 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is NB US 169 over Lizard Creek?

The structure is 459 ft (139.9 m) long with a longest span of 128 ft (39 m) and a deck 43 ft wide.

Who owns NB US 169 over Lizard Creek?

It is owned by the State Highway Agency.