US Bridges

Ch 18(FAS 674) over Lake Mattoon

Fair

Cumberland County, Illinois · 2.5 MI N Neoga · Structure no. 018300400000000

Built
1958
67 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
62 ft
2 main spans
Daily traffic
1,100
2021 count
Owner
County
County Highway Agency

About this bridge

Ch 18(FAS 674) over Lake Mattoon is a concrete channel beam carrying Ch 18(FAS 674) over Lake Mattoon in Cumberland 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 1,100 vehicles a day, roughly 7% of them trucks, projected to reach 1,144 by 2046. The structure is 62 ft (18.9 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCh 18(FAS 674)
CrossesLake Mattoon
Location2.5 MI N Neoga
RouteCounty Highway 0
CountyCumberland County
StateIllinois
Coordinates39.36414, -88.45325
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span29 ft (8.9 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2021)
Projected traffic1,144 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Ch 18(FAS 674) over Lake Mattoon built?

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

What condition is Ch 18(FAS 674) over Lake Mattoon 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 2023.

How much traffic does Ch 18(FAS 674) over Lake Mattoon carry?

About 1,100 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Ch 18(FAS 674) over Lake Mattoon?

The structure is 62 ft (18.9 m) long with a longest span of 29 ft (8.9 m) and a deck 26 ft wide.

Who owns Ch 18(FAS 674) over Lake Mattoon?

It is owned by the County Highway Agency.