US Bridges

Lrd Williamson ST over Yahara River

Fair

Dane County, Wisconsin · 0.2M S JCT Ush 151 · Structure no. P13073800000000

Built
1905
120 years old, rebuilt 1930
Condition
Fair
inspected October 2024
Type
Arch - Deck
Concrete
Length
51 ft
1 main span
Daily traffic
16,800
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd Williamson ST over Yahara River is a concrete arch - deck carrying Lrd Williamson ST over Yahara River in Dane County, Wisconsin. It was built in 1905 and reconstructed in 1930, so it is 120 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 5 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 16,800 vehicles a day, projected to reach 18,757 by 2043. The structure is 51 ft (15.4 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLrd Williamson ST
CrossesYahara River
Location0.2M S JCT Ush 151
RouteCity Street 0
CountyDane County
StateWisconsin
Coordinates43.08808, -89.35819
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.7 US tons
Inventory rating44.6 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length51 ft (15.4 m)
Longest span49 ft (14.8 m)
Deck width62 ft (18.9 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,800 (2022)
Projected traffic18,757 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Williamson ST over Yahara River built?

It was built in 1905, making it 120 years old in 2025. It was reconstructed in 1930.

What condition is Lrd Williamson ST over Yahara 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 October 2024.

How much traffic does Lrd Williamson ST over Yahara River carry?

About 16,800 vehicles per day (2022 count).

How long is Lrd Williamson ST over Yahara River?

The structure is 51 ft (15.4 m) long with a longest span of 49 ft (14.8 m) and a deck 62 ft wide.

Who owns Lrd Williamson ST over Yahara River?

It is owned by the City or Municipal Highway Agency.