US Bridges

FAS 174 Lang RD over I-88

Fair

DeKalb County, Illinois · 3 MI E Ogle CO Line · Structure no. 019990500000000

Built
1974
51 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
223 ft
4 main spans
Daily traffic
300
2021 count
Owner
Toll Authority
State Toll Authority

About this bridge

FAS 174 Lang RD over I-88 is a prestressed concrete stringer/multi-beam or girder carrying FAS 174 Lang 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 300 vehicles a day, roughly 9% of them trucks, projected to reach 336 by 2046. The structure is 223 ft (68 m) long and 34 ft wide.

CarriesFAS 174 Lang RD
CrossesI-88
Location3 MI E Ogle CO Line
RouteCounty Highway 0
Coordinates41.89961, -88.88628
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.6 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length223 ft (68 m)
Longest span78 ft (23.8 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2021)
Projected traffic336 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 FAS 174 Lang RD over I-88 built?

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

What condition is FAS 174 Lang 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 July 2023.

How much traffic does FAS 174 Lang RD over I-88 carry?

About 300 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAS 174 Lang RD over I-88?

The structure is 223 ft (68 m) long with a longest span of 78 ft (23.8 m) and a deck 34 ft wide.

Who owns FAS 174 Lang RD over I-88?

It is owned by the State Toll Authority.