US Bridges

US 30 over Welch Creek

Fair

Kane County, Illinois · 3.2 M W of Il 47 · Structure no. 045003400000000

Built
1927
98 years old, rebuilt 1967
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
4,950
2023 count
Owner
State
State Highway Agency

About this bridge

US 30 over Welch Creek is a concrete continuous slab carrying US 30 over Welch Creek in Kane County, Illinois. It was built in 1927 and reconstructed in 1967, so it is 98 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 4,950 vehicles a day, roughly 12% of them trucks, projected to reach 6,222 by 2046. The structure is 52 ft (15.7 m) long and 47 ft wide.

Location

Open in Google Maps
CarriesUS 30
CrossesWelch Creek
Location3.2 M W of Il 47
RouteU.S. Route 30
CountyKane County
StateIllinois
Coordinates41.76411, -88.51558
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length52 ft (15.7 m)
Longest span25 ft (7.5 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,950 (2023)
Projected traffic6,222 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 30 over Welch Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1967.

What condition is US 30 over Welch 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 October 2023.

How much traffic does US 30 over Welch Creek carry?

About 4,950 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 30 over Welch Creek?

The structure is 52 ft (15.7 m) long with a longest span of 25 ft (7.5 m) and a deck 47 ft wide.

Who owns US 30 over Welch Creek?

It is owned by the State Highway Agency.