US Bridges

FAP 324 - Peace RD over I-88

Fair

DeKalb County, Illinois · SE Edge of Dekalb · Structure no. 019991500000000

Built
1974
51 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
243 ft
4 main spans
Daily traffic
11,800
2021 count
Owner
Toll Authority
State Toll Authority

About this bridge

FAP 324 - Peace RD over I-88 is a prestressed concrete stringer/multi-beam or girder carrying FAP 324 - Peace RD over I-88 in DeKalb County, Illinois. It was built in 1974, so it is 51 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 11,800 vehicles a day, roughly 5% of them trucks, projected to reach 13,216 by 2046. The structure is 243 ft (74.1 m) long and 46 ft wide.

Location

Open in Google Maps
CarriesFAP 324 - Peace RD
CrossesI-88
LocationSE Edge of Dekalb
RouteCity Street 0
CountyDeKalb County
StateIllinois
Coordinates41.90053, -88.72398
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span87 ft (26.5 m)
Deck width46 ft (13.9 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,800 (2021)
Projected traffic13,216 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 FAP 324 - Peace RD over I-88 built?

It was built in 1974, making it 51 years old in 2025.

What condition is FAP 324 - Peace RD over I-88 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 FAP 324 - Peace RD over I-88 carry?

About 11,800 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAP 324 - Peace RD over I-88?

The structure is 243 ft (74.1 m) long with a longest span of 87 ft (26.5 m) and a deck 46 ft wide.

Who owns FAP 324 - Peace RD over I-88?

It is owned by the State Toll Authority.