US Bridges

St. Marys RD-TR29 over Stream

Fair

Lee County, Illinois · May-Sublette Twp LN · Structure no. 052441600000000

Built
1991
34 years old
Condition
Fair
inspected January 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
25
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

St. Marys RD-TR29 over Stream is a prestressed concrete box beam or girders - multiple carrying St. Marys RD-TR29 over Stream in Lee County, Illinois. It was built in 1991, so it is 34 years old, younger 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 25 vehicles a day, projected to reach 25 by 2046. The structure is 36 ft (10.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSt. Marys RD-TR29
CrossesStream
LocationMay-Sublette Twp LN
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.59949, -89.28602
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span34 ft (10.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2017)
Projected traffic25 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 St. Marys RD-TR29 over Stream built?

It was built in 1991, making it 34 years old in 2025.

What condition is St. Marys RD-TR29 over Stream 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 January 2022.

How much traffic does St. Marys RD-TR29 over Stream carry?

About 25 vehicles per day (2017 count).

How long is St. Marys RD-TR29 over Stream?

The structure is 36 ft (10.9 m) long with a longest span of 34 ft (10.4 m) and a deck 28 ft wide.

Who owns St. Marys RD-TR29 over Stream?

It is owned by the Town or Township Highway Agency.