US Bridges

Il 99 over Mcgee Drainage Ditch

Good

Pike County, Illinois · .1M N Il 104 · Structure no. 075012900000000

Built
1987
38 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
109 ft
2 main spans
Daily traffic
1,950
2023 count
Owner
State
State Highway Agency

About this bridge

Il 99 over Mcgee Drainage Ditch is a steel continuous stringer/multi-beam or girder carrying Il 99 over Mcgee Drainage Ditch in Pike County, Illinois. It was built in 1987, so it is 38 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,950 vehicles a day, roughly 23% of them trucks, projected to reach 2,204 by 2046. The structure is 109 ft (33.3 m) long and 35 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesIl 99
CrossesMcgee Drainage Ditch
Location.1M N Il 104
RouteState Highway 99
Coordinates39.83311, -90.5826
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.5 US tons
Inventory rating48.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length109 ft (33.3 m)
Longest span52 ft (15.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2023)
Projected traffic2,204 by 2046
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 99 over Mcgee Drainage Ditch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Il 99 over Mcgee Drainage Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Il 99 over Mcgee Drainage Ditch carry?

About 1,950 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is Il 99 over Mcgee Drainage Ditch?

The structure is 109 ft (33.3 m) long with a longest span of 52 ft (15.8 m) and a deck 35 ft wide.

Who owns Il 99 over Mcgee Drainage Ditch?

It is owned by the State Highway Agency.