US Bridges

TR 329A over Lowis Branch

Good

Christian County, Illinois · 3.5 SE Morrisonville · Structure no. 011504500000000

Built
1990
35 years old
Condition
Good
inspected December 2022
Type
Culvert
Concrete
Length
38 ft
2 main spans
Daily traffic
10
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 329A over Lowis Branch is a concrete culvert carrying TR 329A over Lowis Branch in Christian County, Illinois. It was built in 1990, so it is 35 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 10 by 2046. The structure is 38 ft (11.7 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTR 329A
CrossesLowis Branch
Location3.5 SE Morrisonville
RouteCounty Highway 0
Coordinates39.378, -89.39104
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2022
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length38 ft (11.7 m)
Longest span17 ft (5.3 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2021)
Projected traffic10 by 2046
Trucks10%
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 TR 329A over Lowis Branch built?

It was built in 1990, making it 35 years old in 2025.

What condition is TR 329A over Lowis Branch 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 2022.

How much traffic does TR 329A over Lowis Branch carry?

About 10 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is TR 329A over Lowis Branch?

The structure is 38 ft (11.7 m) long with a longest span of 17 ft (5.3 m) and a deck 26 ft wide.

Who owns TR 329A over Lowis Branch?

It is owned by the Town or Township Highway Agency.