US Bridges

Il 9 over Laharpe Creek

Fair

Hancock County, Illinois · 3.8M E Il 94 Laharpe · Structure no. 034052800000000

Built
2011
14 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
104 ft
1 main span
Daily traffic
1,300
2023 count
Owner
State
State Highway Agency

About this bridge

Il 9 over Laharpe Creek is a steel stringer/multi-beam or girder carrying Il 9 over Laharpe Creek in Hancock County, Illinois. It was built in 2011, so it is 14 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 1,300 vehicles a day, roughly 14% of them trucks, projected to reach 985 by 2046. The structure is 104 ft (31.7 m) long and 39 ft wide. If it were closed, the detour would be 46 mi (74 km).

Location

Open in Google Maps
CarriesIl 9
CrossesLaharpe Creek
Location3.8M E Il 94 Laharpe
RouteState Highway 9
CountyHancock County
StateIllinois
Coordinates40.56983, -90.92123
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.4 US tons
Inventory rating66.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length104 ft (31.7 m)
Longest span101 ft (30.8 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic985 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed46 mi (74 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 9 over Laharpe Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Il 9 over Laharpe 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 June 2023.

How much traffic does Il 9 over Laharpe Creek carry?

About 1,300 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Il 9 over Laharpe Creek?

The structure is 104 ft (31.7 m) long with a longest span of 101 ft (30.8 m) and a deck 39 ft wide.

Who owns Il 9 over Laharpe Creek?

It is owned by the State Highway Agency.