US Bridges

120th St. over Little Volga R

Good

Fayette County, Iowa · 092091001 · Structure no. 000000000150511

Built
1996
29 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
115 ft
3 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

120th St. over Little Volga R is a concrete continuous slab carrying 120th St. over Little Volga R in Fayette County, Iowa. It was built in 1996, so it is 29 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 15 vehicles a day, projected to reach 15 by 2043. The structure is 115 ft (35.2 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries120th St.
CrossesLittle Volga R
Location092091001
RouteCounty Highway 0
StateIowa
Coordinates42.80265, -91.88544
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 inspectionOctober 2023
Inspection intervalevery 24 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 alignment8: Equal to present desirable criteria
Operating rating91.3 US tons
Inventory rating54.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (35.2 m)
Longest span44 ft (13.4 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 120th St. over Little Volga R built?

It was built in 1996, making it 29 years old in 2025.

What condition is 120th St. over Little Volga R 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 2023.

How much traffic does 120th St. over Little Volga R carry?

About 15 vehicles per day (2022 count).

How long is 120th St. over Little Volga R?

The structure is 115 ft (35.2 m) long with a longest span of 44 ft (13.4 m) and a deck 27 ft wide.

Who owns 120th St. over Little Volga R?

It is owned by the County Highway Agency.