US Bridges

Liberty Avenue over Small

Good

Butler County, Iowa · 092173602 · Structure no. 000000000364590

Built
2003
22 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
118
2022 count
Owner
County
County Highway Agency

About this bridge

Liberty Avenue over Small is a prestressed concrete tee beam carrying Liberty Avenue over Small in Butler County, Iowa. It was built in 2003, so it is 22 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 118 vehicles a day, roughly 11% of them trucks, projected to reach 118 by 2044. The structure is 56 ft (17.1 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLiberty Avenue
CrossesSmall
Location092173602
RouteCounty Highway 0
StateIowa
Coordinates42.73409, -92.81008
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 alignment7: Better than present minimum criteria
Operating rating61.1 US tons
Inventory rating34.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic118 (2022)
Projected traffic118 by 2044
Trucks11%
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$170,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Liberty Avenue over Small built?

It was built in 2003, making it 22 years old in 2025.

What condition is Liberty Avenue over Small 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 April 2024.

How much traffic does Liberty Avenue over Small carry?

About 118 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Liberty Avenue over Small?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 28 ft wide.

Who owns Liberty Avenue over Small?

It is owned by the County Highway Agency.