US Bridges

Seemann RD over S Br Kishwaukee Riv.

Fair

McHenry County, Illinois · 0.5 MI S Hemmingsen · Structure no. 056311300000000

Built
1973
52 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
92 ft
2 main spans
Daily traffic
525
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Seemann RD over S Br Kishwaukee Riv. is a prestressed concrete box beam or girders - multiple carrying Seemann RD over S Br Kishwaukee Riv. in McHenry County, Illinois. It was built in 1973, so it is 52 years old, older than the Illinois average of 45.3 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 525 vehicles a day, roughly 8% of them trucks, projected to reach 630 by 2046. The structure is 92 ft (27.9 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSeemann RD
CrossesS Br Kishwaukee Riv.
Location0.5 MI S Hemmingsen
RouteCounty Highway 0
CountyMcHenry County
StateIllinois
Coordinates42.21938, -88.49157
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
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 rating54.7 US tons
Inventory rating32.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length92 ft (27.9 m)
Longest span44 ft (13.3 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2021)
Projected traffic630 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Seemann RD over S Br Kishwaukee Riv. built?

It was built in 1973, making it 52 years old in 2025.

What condition is Seemann RD over S Br Kishwaukee Riv. 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 2023.

How much traffic does Seemann RD over S Br Kishwaukee Riv. carry?

About 525 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Seemann RD over S Br Kishwaukee Riv.?

The structure is 92 ft (27.9 m) long with a longest span of 44 ft (13.3 m) and a deck 27 ft wide.

Who owns Seemann RD over S Br Kishwaukee Riv.?

It is owned by the Town or Township Highway Agency.