US Bridges

Sth 73 over Cnw RR

Fair

Dodge County, Wisconsin · 0.4M N JCT Cth Cd · Structure no. B14007700000000

Built
1978
47 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
216 ft
3 main spans
Daily traffic
2,400
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 73 over Cnw RR is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 73 over Cnw RR in Dodge County, Wisconsin. It was built in 1978, so it is 47 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 2,400 vehicles a day, roughly 8% of them trucks, projected to reach 2,880 by 2042. The structure is 216 ft (65.7 m) long and 43 ft wide. If it were closed, the detour would be 38.5 mi (62 km).

Location

Open in Google Maps
CarriesSth 73
CrossesCnw RR
Location0.4M N JCT Cth Cd
RouteState Highway 73
CountyDodge County
StateWisconsin
Coordinates43.51168, -89.00018
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length216 ft (65.7 m)
Longest span77 ft (23.5 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2022)
Projected traffic2,880 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed38.5 mi (62 km)
TollOn a free road
National Highway SystemNo

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 73 over Cnw RR built?

It was built in 1978, making it 47 years old in 2025.

What condition is Sth 73 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 July 2023.

How much traffic does Sth 73 over Cnw RR carry?

About 2,400 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 73 over Cnw RR?

The structure is 216 ft (65.7 m) long with a longest span of 77 ft (23.5 m) and a deck 43 ft wide.

Who owns Sth 73 over Cnw RR?

It is owned by the State Highway Agency.