US Bridges

Old Post RD over Plum Creek

Good

Will County, Illinois · 1 MI N Exchange Av · Structure no. 099470700000000

Built
2004
21 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete Continuous
Length
89 ft
3 main spans
Daily traffic
1,500
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Old Post RD over Plum Creek is a concrete continuous slab carrying Old Post RD over Plum Creek in Will County, Illinois. It was built in 2004, so it is 21 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,500 vehicles a day, roughly 5% of them trucks, projected to reach 2,016 by 2046. The structure is 89 ft (27 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesOld Post RD
CrossesPlum Creek
Location1 MI N Exchange Av
RouteCounty Highway 0
Coordinates41.45061, -87.55541
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length89 ft (27 m)
Longest span86 ft (26.2 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2023)
Projected traffic2,016 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Old Post RD over Plum Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Old Post RD over Plum Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does Old Post RD over Plum Creek carry?

About 1,500 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Old Post RD over Plum Creek?

The structure is 89 ft (27 m) long with a longest span of 86 ft (26.2 m) and a deck 32 ft wide.

Who owns Old Post RD over Plum Creek?

It is owned by the Town or Township Highway Agency.