US Bridges

FAU 7431(OAKLAND a over I-72

Fair

Macon County, Illinois · N Edge of Decatur · Structure no. 058007600000000

Built
1976
49 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
263 ft
2 main spans
Daily traffic
3,250
2023 count
Owner
State
State Highway Agency

About this bridge

FAU 7431(OAKLAND a over I-72 is a steel continuous stringer/multi-beam or girder carrying FAU 7431(OAKLAND a over I-72 in Macon 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 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 3,250 vehicles a day, roughly 2% of them trucks, projected to reach 3,535 by 2046. The structure is 263 ft (80.2 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesFAU 7431(OAKLAND a
CrossesI-72
LocationN Edge of Decatur
CountyMacon County
StateIllinois
Coordinates39.90722, -88.97404
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.4 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length263 ft (80.2 m)
Longest span111 ft (33.8 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,250 (2023)
Projected traffic3,535 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 7431(OAKLAND a over I-72 built?

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

What condition is FAU 7431(OAKLAND a over I-72 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 October 2024.

How much traffic does FAU 7431(OAKLAND a over I-72 carry?

About 3,250 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is FAU 7431(OAKLAND a over I-72?

The structure is 263 ft (80.2 m) long with a longest span of 111 ft (33.8 m) and a deck 30 ft wide.

Who owns FAU 7431(OAKLAND a over I-72?

It is owned by the State Highway Agency.