US Bridges

FAS 398 - Ch 20 over Trib to Haw Creek

Fair

Knox County, Illinois · NW-1-T9NR2E · Structure no. 048501800000000

Built
1973
52 years old
Condition
Fair
inspected January 2024
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

FAS 398 - Ch 20 over Trib to Haw Creek is a steel culvert carrying FAS 398 - Ch 20 over Trib to Haw Creek in Knox 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 6 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 100 vehicles a day, roughly 41% of them trucks, projected to reach 202 by 2046. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAS 398 - Ch 20
CrossesTrib to Haw Creek
LocationNW-1-T9NR2E
RouteCounty Highway 0
CountyKnox County
StateIllinois
Coordinates40.79403, -90.22693
Functional classRural Major 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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating98.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 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 traffic100 (2022)
Projected traffic202 by 2046
Trucks41%
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

OwnerCounty Highway Agency
Maintained byCounty 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 FAS 398 - Ch 20 over Trib to Haw Creek built?

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

What condition is FAS 398 - Ch 20 over Trib to Haw 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 January 2024.

How much traffic does FAS 398 - Ch 20 over Trib to Haw Creek carry?

About 100 vehicles per day (2022 count), of which roughly 41% are trucks.

How long is FAS 398 - Ch 20 over Trib to Haw Creek?

The structure is 24 ft (7.3 m) long with a longest span of 9 ft (2.7 m).

Who owns FAS 398 - Ch 20 over Trib to Haw Creek?

It is owned by the County Highway Agency.