US Bridges

FAU 6087 Seventh S over Ill 251

Fair

LaSalle County, Illinois · 0.2 MI N of US 6 · Structure no. 050014000000000

Built
1961
64 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
115 ft
1 main span
Daily traffic
1,000
2020 count
Owner
State
State Highway Agency

About this bridge

FAU 6087 Seventh S over Ill 251 is a steel stringer/multi-beam or girder carrying FAU 6087 Seventh S over Ill 251 in LaSalle County, Illinois. It was built in 1961, so it is 64 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 1,000 vehicles a day, roughly 6% of them trucks, projected to reach 1,010 by 2046. The structure is 115 ft (35.2 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAU 6087 Seventh S
CrossesIll 251
Location0.2 MI N of US 6
CountyLaSalle County
StateIllinois
Coordinates41.33048, -89.12003
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length115 ft (35.2 m)
Longest span71 ft (21.7 m)
Deck width44 ft (13.4 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,010 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$122,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 6087 Seventh S over Ill 251 built?

It was built in 1961, making it 64 years old in 2025.

What condition is FAU 6087 Seventh S over Ill 251 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 June 2024.

How much traffic does FAU 6087 Seventh S over Ill 251 carry?

About 1,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is FAU 6087 Seventh S over Ill 251?

The structure is 115 ft (35.2 m) long with a longest span of 71 ft (21.7 m) and a deck 44 ft wide.

Who owns FAU 6087 Seventh S over Ill 251?

It is owned by the State Highway Agency.