US Bridges

Il 29 over Stream

Good

Bureau County, Illinois · 0.99 MI N 078 CO LN · Structure no. 006018600000000

Built
1999
26 years old
Condition
Good
inspected February 2021
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
350
2023 count
Owner
State
State Highway Agency

About this bridge

Il 29 over Stream is a concrete culvert carrying Il 29 over Stream in Bureau County, Illinois. It was built in 1999, so it is 26 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 350 vehicles a day, roughly 14% of them trucks, projected to reach 682 by 2046. The structure is 28 ft (8.6 m) long and 95 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIl 29
CrossesStream
Location0.99 MI N 078 CO LN
RouteState Highway 29
CountyBureau County
StateIllinois
Coordinates41.24715, -89.39583
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length28 ft (8.6 m)
Longest span15 ft (4.5 m)
Deck width95 ft (28.9 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2023)
Projected traffic682 by 2046
Trucks14%
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 29 over Stream built?

It was built in 1999, making it 26 years old in 2025.

What condition is Il 29 over Stream 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 February 2021.

How much traffic does Il 29 over Stream carry?

About 350 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Il 29 over Stream?

The structure is 28 ft (8.6 m) long with a longest span of 15 ft (4.5 m) and a deck 95 ft wide.

Who owns Il 29 over Stream?

It is owned by the State Highway Agency.