US Bridges

104th Ave over Lizard Creek

Good

Clinton County, Iowa · 081E11906 · Structure no. 000000000121752

Built
1994
31 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
73
2022 count
Owner
County
County Highway Agency

About this bridge

104th Ave over Lizard Creek is a prestressed concrete tee beam carrying 104th Ave over Lizard Creek in Clinton County, Iowa. It was built in 1994, so it is 31 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 73 vehicles a day, projected to reach 73 by 2044. The structure is 56 ft (17.1 m) long and 24 ft wide.

Carries104th Ave
CrossesLizard Creek
Location081E11906
RouteCounty Highway 0
StateIowa
Coordinates41.81064, -90.8911
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating36.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2022)
Projected traffic73 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 104th Ave over Lizard Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is 104th Ave 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 January 2024.

How much traffic does 104th Ave over Lizard Creek carry?

About 73 vehicles per day (2022 count).

How long is 104th Ave over Lizard Creek?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 24 ft wide.

Who owns 104th Ave over Lizard Creek?

It is owned by the County Highway Agency.