US Bridges

South State Street over Geneseo Creek

Good

Henry County, Illinois · So Center of Geneseo · Structure no. 037600400000000

Built
1985
40 years old, rebuilt 2014
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
86 ft
3 main spans
Daily traffic
2,700
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

South State Street over Geneseo Creek is a prestressed concrete box beam or girders - multiple carrying South State Street over Geneseo Creek in Henry County, Illinois. It was built in 1985 and reconstructed in 2014, so it is 40 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 2,700 vehicles a day, roughly 5% of them trucks, projected to reach 2,916 by 2046. The structure is 86 ft (26.3 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouth State Street
CrossesGeneseo Creek
LocationSo Center of Geneseo
Coordinates41.43789, -90.15578
Functional classUrban Collector

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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length86 ft (26.3 m)
Longest span27 ft (8.2 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2020)
Projected traffic2,916 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 South State Street over Geneseo Creek built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2014.

What condition is South State Street over Geneseo 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 October 2024.

How much traffic does South State Street over Geneseo Creek carry?

About 2,700 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is South State Street over Geneseo Creek?

The structure is 86 ft (26.3 m) long with a longest span of 27 ft (8.2 m) and a deck 30 ft wide.

Who owns South State Street over Geneseo Creek?

It is owned by the City or Municipal Highway Agency.