US Bridges

Ill RTE 127 over Mill Creek

Good

Union County, Illinois · 0.5 MI N Mill Creek · Structure no. 091006700000000

Built
1988
37 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
74 ft
1 main span
Daily traffic
900
2023 count
Owner
State
State Highway Agency

About this bridge

Ill RTE 127 over Mill Creek is a steel stringer/multi-beam or girder carrying Ill RTE 127 over Mill Creek in Union County, Illinois. It was built in 1988, so it is 37 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 900 vehicles a day, roughly 9% of them trucks, projected to reach 1,162 by 2046. The structure is 74 ft (22.7 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesIll RTE 127
CrossesMill Creek
Location0.5 MI N Mill Creek
RouteState Highway 127
Coordinates37.35319, -89.25904
Functional classRural Major Collector

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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating47.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length74 ft (22.7 m)
Longest span72 ft (21.9 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2023)
Projected traffic1,162 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 Ill RTE 127 over Mill Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Ill RTE 127 over Mill 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 Ill RTE 127 over Mill Creek carry?

About 900 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ill RTE 127 over Mill Creek?

The structure is 74 ft (22.7 m) long with a longest span of 72 ft (21.9 m) and a deck 33 ft wide.

Who owns Ill RTE 127 over Mill Creek?

It is owned by the State Highway Agency.