US Bridges

Lrd Hilbert RD over Little Suamico River

Fair

Oconto County, Wisconsin · 0.2M S JCT Cth S · Structure no. P42009700000000

Built
1979
46 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
78 ft
3 main spans
Daily traffic
175
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd Hilbert RD over Little Suamico River is a steel culvert carrying Lrd Hilbert RD over Little Suamico River in Oconto County, Wisconsin. It was built in 1979, so it is 46 years old, older than the Wisconsin average of 40.3 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 175 vehicles a day, projected to reach 192 by 2043. The structure is 78 ft (23.8 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesLrd Hilbert RD
CrossesLittle Suamico River
Location0.2M S JCT Cth S
RouteCity Street 0
Coordinates44.71817, -88.131
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckCorrugated steel
Main spans3
Design loadH 20
Structure length78 ft (23.8 m)
Longest span21 ft (6.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2022)
Projected traffic192 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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Lrd Hilbert RD over Little Suamico River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Lrd Hilbert RD over Little Suamico River 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 September 2024.

How much traffic does Lrd Hilbert RD over Little Suamico River carry?

About 175 vehicles per day (2022 count).

How long is Lrd Hilbert RD over Little Suamico River?

The structure is 78 ft (23.8 m) long with a longest span of 21 ft (6.3 m).

Who owns Lrd Hilbert RD over Little Suamico River?

It is owned by the Town or Township Highway Agency.