US Bridges

Sth 16 over Cnw RR

Fair

Dodge County, Wisconsin · 1.8M E JCT Cth Q · Structure no. B14004100000000

Built
1959
66 years old, rebuilt 2022
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
139 ft
3 main spans
Daily traffic
6,300
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 16 over Cnw RR is a steel continuous stringer/multi-beam or girder carrying Sth 16 over Cnw RR in Dodge County, Wisconsin. It was built in 1959 and reconstructed in 2022, so it is 66 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 6,300 vehicles a day, roughly 9% of them trucks, projected to reach 7,560 by 2041. The structure is 139 ft (42.5 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSth 16
CrossesCnw RR
Location1.8M E JCT Cth Q
RouteState Highway 16
CountyDodge County
StateWisconsin
Coordinates43.21709, -88.73446
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length139 ft (42.5 m)
Longest span52 ft (15.8 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2021)
Projected traffic7,560 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 16 over Cnw RR built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2022.

What condition is Sth 16 over Cnw RR 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 August 2024.

How much traffic does Sth 16 over Cnw RR carry?

About 6,300 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Sth 16 over Cnw RR?

The structure is 139 ft (42.5 m) long with a longest span of 52 ft (15.8 m) and a deck 36 ft wide.

Who owns Sth 16 over Cnw RR?

It is owned by the State Highway Agency.