US Bridges

US 36(FAP 320) over Lake Shore Dr(u 7390

Poor

Macon County, Illinois · In Decatur · Structure no. 058001900000000

Built
1954
71 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
20,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 36(FAP 320) over Lake Shore Dr(u 7390 is a steel stringer/multi-beam or girder carrying US 36(FAP 320) over Lake Shore Dr(u 7390 in Macon County, Illinois. It was built in 1954, so it is 71 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 20,900 vehicles a day, roughly 5% of them trucks, projected to reach 22,422 by 2046. The structure is 40 ft (12.3 m) long and 70 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 36(FAP 320)
CrossesLake Shore Dr(u 7390
LocationIn Decatur
RouteU.S. Route 36
CountyMacon County
StateIllinois
Coordinates39.83604, -88.91352
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
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.
Last inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span38 ft (11.7 m)
Deck width70 ft (21.2 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,900 (2023)
Projected traffic22,422 by 2046
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 36(FAP 320) over Lake Shore Dr(u 7390 built?

It was built in 1954, making it 71 years old in 2025.

What condition is US 36(FAP 320) over Lake Shore Dr(u 7390 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does US 36(FAP 320) over Lake Shore Dr(u 7390 carry?

About 20,900 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 36(FAP 320) over Lake Shore Dr(u 7390?

The structure is 40 ft (12.3 m) long with a longest span of 38 ft (11.7 m) and a deck 70 ft wide.

Who owns US 36(FAP 320) over Lake Shore Dr(u 7390?

It is owned by the State Highway Agency.