US Bridges

Gilmore Lk Rd/ TR over Trib Gerhardt Creek

Fair

Monroe County, Illinois · Road District 2 · Structure no. 067314500000000

Built
1992
33 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
225
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Gilmore Lk Rd/ TR over Trib Gerhardt Creek is a prestressed concrete box beam or girders - multiple carrying Gilmore Lk Rd/ TR over Trib Gerhardt Creek in Monroe County, Illinois. It was built in 1992, so it is 33 years old, younger 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 225 vehicles a day, roughly 18% of them trucks, projected to reach 283 by 2046. The structure is 61 ft (18.7 m) long and 24 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesGilmore Lk Rd/ TR
CrossesTrib Gerhardt Creek
LocationRoad District 2
RouteCounty Highway 0
Coordinates38.37131, -90.10108
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length61 ft (18.7 m)
Longest span59 ft (18 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2024)
Projected traffic283 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Gilmore Lk Rd/ TR over Trib Gerhardt Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Gilmore Lk Rd/ TR over Trib Gerhardt Creek 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 February 2024.

How much traffic does Gilmore Lk Rd/ TR over Trib Gerhardt Creek carry?

About 225 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Gilmore Lk Rd/ TR over Trib Gerhardt Creek?

The structure is 61 ft (18.7 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.

Who owns Gilmore Lk Rd/ TR over Trib Gerhardt Creek?

It is owned by the Town or Township Highway Agency.