US Bridges

Il 127 over Blue Grass Creek

Good

Montgomery County, Illinois · 3.4M S Il 48 · Structure no. 068005900000000

Built
1990
35 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
78 ft
1 main span
Daily traffic
2,950
2023 count
Owner
State
State Highway Agency

About this bridge

Il 127 over Blue Grass Creek is a steel continuous stringer/multi-beam or girder carrying Il 127 over Blue Grass Creek in Montgomery County, Illinois. It was built in 1990, so it is 35 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 2,950 vehicles a day, roughly 16% of them trucks, projected to reach 2,121 by 2046. The structure is 78 ft (23.8 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIl 127
CrossesBlue Grass Creek
Location3.4M S Il 48
RouteState Highway 127
Coordinates39.2732, -89.55189
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating59.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span75 ft (23 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,950 (2023)
Projected traffic2,121 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 127 over Blue Grass Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Il 127 over Blue Grass Creek 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 March 2023.

How much traffic does Il 127 over Blue Grass Creek carry?

About 2,950 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Il 127 over Blue Grass Creek?

The structure is 78 ft (23.8 m) long with a longest span of 75 ft (23 m) and a deck 35 ft wide.

Who owns Il 127 over Blue Grass Creek?

It is owned by the State Highway Agency.