US Bridges

CO HWY 8 over Trib to Little Muddy

Fair

Perry County, Illinois · W of Franklin CO · Structure no. 073311500000000

Built
1981
44 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
102 ft
3 main spans
Daily traffic
250
2024 count
Owner
County
County Highway Agency

About this bridge

CO HWY 8 over Trib to Little Muddy is a prestressed concrete box beam or girders - multiple carrying CO HWY 8 over Trib to Little Muddy in Perry County, Illinois. It was built in 1981, so it is 44 years old, younger 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 24% of them trucks, projected to reach 278 by 2046. The structure is 102 ft (31.1 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCO HWY 8
CrossesTrib to Little Muddy
LocationW of Franklin CO
RouteCounty Highway 0
CountyPerry County
StateIllinois
Coordinates38.11193, -89.13198
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 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
Deck geometry6: Equal to present minimum criteria
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 typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span44 ft (13.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2024)
Projected traffic278 by 2046
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 CO HWY 8 over Trib to Little Muddy built?

It was built in 1981, making it 44 years old in 2025.

What condition is CO HWY 8 over Trib to Little Muddy 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 CO HWY 8 over Trib to Little Muddy carry?

About 250 vehicles per day (2024 count), of which roughly 24% are trucks.

How long is CO HWY 8 over Trib to Little Muddy?

The structure is 102 ft (31.1 m) long with a longest span of 44 ft (13.4 m) and a deck 30 ft wide.

Who owns CO HWY 8 over Trib to Little Muddy?

It is owned by the County Highway Agency.