US Bridges

Lrd E Dyreson RD over Yahara River

FairPosted for load

Dane County, Wisconsin · 0.6M W JCT Cth Ab · Structure no. P13019000000000

Built
1897
128 years old, rebuilt 1983
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
127 ft
1 main span
Daily traffic
450
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd E Dyreson RD over Yahara River is a steel truss - thru carrying Lrd E Dyreson RD over Yahara River in Dane County, Wisconsin. It was built in 1897 and reconstructed in 1983, so it is 128 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. Its operating status is: posted for load restriction.

It carries about 450 vehicles a day, projected to reach 550 by 2043. The structure is 127 ft (38.8 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLrd E Dyreson RD
CrossesYahara River
Location0.6M W JCT Cth Ab
RouteCity Street 0
CountyDane County
StateWisconsin
Coordinates42.98808, -89.27864
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length127 ft (38.8 m)
Longest span124 ft (37.8 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic450 (2022)
Projected traffic550 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$576,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lrd E Dyreson RD over Yahara River built?

It was built in 1897, making it 128 years old in 2025. It was reconstructed in 1983.

What condition is Lrd E Dyreson RD 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 September 2024.

How much traffic does Lrd E Dyreson RD over Yahara River carry?

About 450 vehicles per day (2022 count).

How long is Lrd E Dyreson RD over Yahara River?

The structure is 127 ft (38.8 m) long with a longest span of 124 ft (37.8 m) and a deck 16 ft wide.

Who owns Lrd E Dyreson RD over Yahara River?

It is owned by the Town or Township Highway Agency.