US Bridges

Dawson Lake RD over Branch of Beaver CR

Fair

Boone County, Illinois · 5.0 MI N Belvidere · Structure no. 004303600000000

Built
1958
67 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
1,750
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dawson Lake RD over Branch of Beaver CR is a concrete culvert carrying Dawson Lake RD over Branch of Beaver CR in Boone County, Illinois. It was built in 1958, so it is 67 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 1,750 vehicles a day, roughly 2% of them trucks, projected to reach 1,820 by 2046. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesDawson Lake RD
CrossesBranch of Beaver CR
Location5.0 MI N Belvidere
RouteCity Street 0
CountyBoone County
StateIllinois
Coordinates42.342, -88.86599
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (6.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2023)
Projected traffic1,820 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Dawson Lake RD over Branch of Beaver CR built?

It was built in 1958, making it 67 years old in 2025.

What condition is Dawson Lake RD over Branch of Beaver CR 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 Dawson Lake RD over Branch of Beaver CR carry?

About 1,750 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Dawson Lake RD over Branch of Beaver CR?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m).

Who owns Dawson Lake RD over Branch of Beaver CR?

It is owned by the City or Municipal Highway Agency.