US Bridges

FAP-726 (ILL-148) over Big Muddy River

Fair

Jefferson County, Illinois · 1.5 MI W Nason Road · Structure no. 041009600000000

Built
1980
45 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
647 ft
8 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

FAP-726 (ILL-148) over Big Muddy River is a prestressed concrete stringer/multi-beam or girder carrying FAP-726 (ILL-148) over Big Muddy River in Jefferson County, Illinois. It was built in 1980, so it is 45 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 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 3,500 vehicles a day, roughly 7% of them trucks, projected to reach 3,283 by 2046. The structure is 647 ft (197.2 m) long and 35 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesFAP-726 (ILL-148)
CrossesBig Muddy River
Location1.5 MI W Nason Road
RouteState Highway 148
CountyJefferson County
StateIllinois
Coordinates38.21405, -89.00037
Functional classRural 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length647 ft (197.2 m)
Longest span81 ft (24.7 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic3,283 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
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 FAP-726 (ILL-148) over Big Muddy River built?

It was built in 1980, making it 45 years old in 2025.

What condition is FAP-726 (ILL-148) over Big Muddy River 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 August 2023.

How much traffic does FAP-726 (ILL-148) over Big Muddy River carry?

About 3,500 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is FAP-726 (ILL-148) over Big Muddy River?

The structure is 647 ft (197.2 m) long with a longest span of 81 ft (24.7 m) and a deck 35 ft wide.

Who owns FAP-726 (ILL-148) over Big Muddy River?

It is owned by the State Highway Agency.