US Bridges

Ill. Rte. 127 over Swanwick Creek

Fair

Perry County, Illinois · 4.25M S Wash CO Line · Structure no. 073002500000000

Built
1976
49 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
147 ft
3 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

Ill. Rte. 127 over Swanwick Creek is a steel continuous stringer/multi-beam or girder carrying Ill. Rte. 127 over Swanwick Creek in Perry County, Illinois. It was built in 1976, so it is 49 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 3,500 vehicles a day, roughly 11% of them trucks, projected to reach 3,333 by 2046. The structure is 147 ft (44.9 m) long and 46 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

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CarriesIll. Rte. 127
CrossesSwanwick Creek
Location4.25M S Wash CO Line
RouteState Highway 127
CountyPerry County
StateIllinois
Coordinates38.15376, -89.38542
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length147 ft (44.9 m)
Longest span54 ft (16.4 m)
Deck width46 ft (14 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic3,333 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemYes

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 Swanwick Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Ill. Rte. 127 over Swanwick Creek 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 February 2024.

How much traffic does Ill. Rte. 127 over Swanwick Creek carry?

About 3,500 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Ill. Rte. 127 over Swanwick Creek?

The structure is 147 ft (44.9 m) long with a longest span of 54 ft (16.4 m) and a deck 46 ft wide.

Who owns Ill. Rte. 127 over Swanwick Creek?

It is owned by the State Highway Agency.