US Bridges

TR 276 over Nassa Creek

Good

Macoupin County, Illinois · 3 M NE Modesto · Structure no. 059501200000000

Built
2020
5 years old
Condition
Good
inspected March 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
25 ft
1 main span
Daily traffic
10
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 276 over Nassa Creek is a aluminum, wrought iron, or cast iron culvert carrying TR 276 over Nassa Creek in Macoupin County, Illinois. It was built in 2020, so it is 5 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 25 ft (7.5 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesTR 276
CrossesNassa Creek
Location3 M NE Modesto
RouteCounty Highway 0
Coordinates39.49848, -89.92668
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 protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 rating53.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length25 ft (7.5 m)
Longest span0 ft (0 m)
Deck width0 ft (0 m)
Roadway width20 ft (6.1 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 closed5 mi (8 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 276 over Nassa Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is TR 276 over Nassa Creek 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 March 2023.

How much traffic does TR 276 over Nassa Creek carry?

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

How long is TR 276 over Nassa Creek?

The structure is 25 ft (7.5 m) long.

Who owns TR 276 over Nassa Creek?

It is owned by the Town or Township Highway Agency.