US Bridges

Il 172 over Branch Ditch

Good

Whiteside County, Illinois · 2 Mi. N. of Tampico · Structure no. 098010500000000

Built
1994
31 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
950
2023 count
Owner
State
State Highway Agency

About this bridge

Il 172 over Branch Ditch is a steel stringer/multi-beam or girder carrying Il 172 over Branch Ditch in Whiteside County, Illinois. It was built in 1994, so it is 31 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 950 vehicles a day, roughly 11% of them trucks, projected to reach 1,212 by 2046. The structure is 73 ft (22.3 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesIl 172
CrossesBranch Ditch
Location2 Mi. N. of Tampico
RouteState Highway 172
Coordinates41.66175, -89.7863
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating56.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length73 ft (22.3 m)
Longest span69 ft (21 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2023)
Projected traffic1,212 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 172 over Branch Ditch built?

It was built in 1994, making it 31 years old in 2025.

What condition is Il 172 over Branch Ditch 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 December 2023.

How much traffic does Il 172 over Branch Ditch carry?

About 950 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Il 172 over Branch Ditch?

The structure is 73 ft (22.3 m) long with a longest span of 69 ft (21 m) and a deck 35 ft wide.

Who owns Il 172 over Branch Ditch?

It is owned by the State Highway Agency.