US Bridges

TR-77A over Lake Sara Spillway

Good

Effingham County, Illinois · 2 MI W Effingham · Structure no. 025990300000000

Built
1957
68 years old
Condition
Good
inspected December 2024
Type
Tee Beam
Concrete
Length
86 ft
3 main spans
Daily traffic
900
2023 count
Owner
Private
Private (other than railroad)

About this bridge

TR-77A over Lake Sara Spillway is a concrete tee beam carrying TR-77A over Lake Sara Spillway in Effingham County, Illinois. It was built in 1957, so it is 68 years old, older 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 900 vehicles a day, roughly 12% of them trucks, projected to reach 954 by 2046. The structure is 86 ft (26.2 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesTR-77A
CrossesLake Sara Spillway
Location2 MI W Effingham
RouteCounty Highway 0
CountyEffingham County
StateIllinois
Coordinates39.12344, -88.61771
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadUnknown
Structure length86 ft (26.2 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2023)
Projected traffic954 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
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-77A over Lake Sara Spillway built?

It was built in 1957, making it 68 years old in 2025.

What condition is TR-77A over Lake Sara Spillway 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 2024.

How much traffic does TR-77A over Lake Sara Spillway carry?

About 900 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is TR-77A over Lake Sara Spillway?

The structure is 86 ft (26.2 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns TR-77A over Lake Sara Spillway?

It is owned by the Private (other than railroad).