US Bridges

Il 48(FAP 714) over Mosquito Creek Trib

Fair

Macon County, Illinois · 1 MI NE Blue Mound · Structure no. 058003000000000

Built
1928
97 years old, rebuilt 1991
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
4,500
2023 count
Owner
State
State Highway Agency

About this bridge

Il 48(FAP 714) over Mosquito Creek Trib is a concrete slab carrying Il 48(FAP 714) over Mosquito Creek Trib in Macon County, Illinois. It was built in 1928 and reconstructed in 1991, so it is 97 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 4,500 vehicles a day, roughly 17% of them trucks, projected to reach 4,596 by 2046. The structure is 28 ft (8.5 m) long and 42 ft wide. If it were closed, the detour would be 47.2 mi (76 km).

Location

Open in Google Maps
CarriesIl 48(FAP 714)
CrossesMosquito Creek Trib
Location1 MI NE Blue Mound
RouteState Highway 48
CountyMacon County
StateIllinois
Coordinates39.71666, -89.10569
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span27 ft (8.1 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2023)
Projected traffic4,596 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.2 mi (76 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 Il 48(FAP 714) over Mosquito Creek Trib built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1991.

What condition is Il 48(FAP 714) over Mosquito Creek Trib 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 July 2024.

How much traffic does Il 48(FAP 714) over Mosquito Creek Trib carry?

About 4,500 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Il 48(FAP 714) over Mosquito Creek Trib?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.1 m) and a deck 42 ft wide.

Who owns Il 48(FAP 714) over Mosquito Creek Trib?

It is owned by the State Highway Agency.