US Bridges

80th Ave. over Little Bear Creek

Fair

Jones County, Iowa · 084021302 · Structure no. 000000000207220

Built
1957
68 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
2 main spans
Daily traffic
16
2022 count
Owner
County
County Highway Agency

About this bridge

80th Ave. over Little Bear Creek is a wood or timber stringer/multi-beam or girder carrying 80th Ave. over Little Bear Creek in Jones County, Iowa. It was built in 1957, so it is 68 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 16 vehicles a day, projected to reach 16 by 2044. The structure is 52 ft (15.9 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries80th Ave.
CrossesLittle Bear Creek
Location084021302
RouteCounty Highway 0
CountyJones County
StateIowa
Coordinates42.0803, -91.03427
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.2 US tons
Inventory rating29.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span25 ft (7.6 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (2022)
Projected traffic16 by 2044
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 80th Ave. over Little Bear Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is 80th Ave. over Little Bear Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does 80th Ave. over Little Bear Creek carry?

About 16 vehicles per day (2022 count).

How long is 80th Ave. over Little Bear Creek?

The structure is 52 ft (15.9 m) long with a longest span of 25 ft (7.6 m) and a deck 21 ft wide.

Who owns 80th Ave. over Little Bear Creek?

It is owned by the County Highway Agency.