US Bridges

MS-1980 Willow Crk over Trib to Dunlap Lake

Poor

Madison County, Illinois · 0.03 MI E Gerber RD · Structure no. 060670800000000

Built
1991
34 years old
Condition
Poor
inspected January 2023
Type
Culvert
Steel
Length
31 ft
3 main spans
Daily traffic
525
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

MS-1980 Willow Crk over Trib to Dunlap Lake is a steel culvert carrying MS-1980 Willow Crk over Trib to Dunlap Lake in Madison County, Illinois. It was built in 1991, so it is 34 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 525 vehicles a day, roughly 4% of them trucks, projected to reach 562 by 2046. The structure is 31 ft (9.6 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMS-1980 Willow Crk
CrossesTrib to Dunlap Lake
Location0.03 MI E Gerber RD
RouteCity Street 0
Coordinates38.78943, -89.93249
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.9 US tons
Inventory rating97.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length31 ft (9.6 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2021)
Projected traffic562 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 MS-1980 Willow Crk over Trib to Dunlap Lake built?

It was built in 1991, making it 34 years old in 2025.

What condition is MS-1980 Willow Crk over Trib to Dunlap Lake in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2023.

How much traffic does MS-1980 Willow Crk over Trib to Dunlap Lake carry?

About 525 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is MS-1980 Willow Crk over Trib to Dunlap Lake?

The structure is 31 ft (9.6 m) long with a longest span of 9 ft (2.7 m).

Who owns MS-1980 Willow Crk over Trib to Dunlap Lake?

It is owned by the City or Municipal Highway Agency.