US Bridges

Crawford Road over Spring Creek

Fair

Boone County, Illinois · 6.0 MI SE Belvidere · Structure no. 004306700000000

Built
1977
48 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
250
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Crawford Road over Spring Creek is a concrete culvert carrying Crawford Road over Spring Creek in Boone County, Illinois. It was built in 1977, so it is 48 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 250 vehicles a day, roughly 26% of them trucks, projected to reach 312 by 2046. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCrawford Road
CrossesSpring Creek
Location6.0 MI SE Belvidere
RouteCounty Highway 0
CountyBoone County
StateIllinois
Coordinates42.18625, -88.73258
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic312 by 2046
Trucks26%
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

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 Crawford Road over Spring Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Crawford Road over Spring Creek 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 March 2024.

How much traffic does Crawford Road over Spring Creek carry?

About 250 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is Crawford Road over Spring Creek?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns Crawford Road over Spring Creek?

It is owned by the Town or Township Highway Agency.