US Bridges

FAS 551(CH 27) over Sangamon River

Fair

Macon County, Illinois · .5 MI S Lincoln Pk · Structure no. 058302200000000

Built
1940
85 years old, rebuilt 1987
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
432 ft
6 main spans
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 551(CH 27) over Sangamon River is a steel continuous stringer/multi-beam or girder carrying FAS 551(CH 27) over Sangamon River in Macon County, Illinois. It was built in 1940 and reconstructed in 1987, so it is 85 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 5 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 250 vehicles a day, roughly 16% of them trucks, projected to reach 253 by 2046. The structure is 432 ft (131.7 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFAS 551(CH 27)
CrossesSangamon River
Location.5 MI S Lincoln Pk
RouteCounty Highway 0
CountyMacon County
StateIllinois
Coordinates39.79749, -89.10489
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length432 ft (131.7 m)
Longest span84 ft (25.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic253 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 FAS 551(CH 27) over Sangamon River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1987.

What condition is FAS 551(CH 27) over Sangamon River 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 August 2024.

How much traffic does FAS 551(CH 27) over Sangamon River carry?

About 250 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is FAS 551(CH 27) over Sangamon River?

The structure is 432 ft (131.7 m) long with a longest span of 84 ft (25.5 m) and a deck 30 ft wide.

Who owns FAS 551(CH 27) over Sangamon River?

It is owned by the County Highway Agency.