US Bridges

Il 103 over Town Branch

Fair

Schuyler County, Illinois · 1.3M E US 24 · Structure no. 085000400000000

Built
1929
96 years old, rebuilt 1976
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
1,250
2023 count
Owner
State
State Highway Agency

About this bridge

Il 103 over Town Branch is a steel stringer/multi-beam or girder carrying Il 103 over Town Branch in Schuyler County, Illinois. It was built in 1929 and reconstructed in 1976, so it is 96 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 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 1,250 vehicles a day, roughly 6% of them trucks, projected to reach 1,364 by 2046. The structure is 95 ft (28.9 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesIl 103
CrossesTown Branch
Location1.3M E US 24
RouteState Highway 103
CountySchuyler County
StateIllinois
Coordinates40.03255, -90.60181
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length95 ft (28.9 m)
Longest span89 ft (27 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,250 (2023)
Projected traffic1,364 by 2046
Trucks6%
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

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 103 over Town Branch built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1976.

What condition is Il 103 over Town Branch 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 May 2024.

How much traffic does Il 103 over Town Branch carry?

About 1,250 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Il 103 over Town Branch?

The structure is 95 ft (28.9 m) long with a longest span of 89 ft (27 m) and a deck 32 ft wide.

Who owns Il 103 over Town Branch?

It is owned by the State Highway Agency.