US Bridges

SH 31 over Hubbard Lake Spillway

Good

Hill County, Texas · 2.3 MI SW of SH 171 · Structure no. 091100016202054

Built
1941
84 years old, rebuilt 1959
Condition
Good
inspected January 2023
Type
Culvert
Concrete
Length
26 ft
4 main spans
Daily traffic
5,216
2020 count
Owner
State
State Highway Agency

About this bridge

SH 31 over Hubbard Lake Spillway is a concrete culvert carrying SH 31 over Hubbard Lake Spillway in Hill County, Texas. It was built in 1941 and reconstructed in 1959, so it is 84 years old, older than the Texas average of 44.4 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 5,216 vehicles a day, roughly 14% of them trucks, projected to reach 6,920 by 2033. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSH 31
CrossesHubbard Lake Spillway
Location2.3 MI SW of SH 171
RouteState Highway 31
CountyHill County
StateTexas
Coordinates31.82473, -96.82579
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length26 ft (7.9 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,216 (2020)
Projected traffic6,920 by 2033
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 31 over Hubbard Lake Spillway built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1959.

What condition is SH 31 over Hubbard Lake 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 January 2023.

How much traffic does SH 31 over Hubbard Lake Spillway carry?

About 5,216 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is SH 31 over Hubbard Lake Spillway?

The structure is 26 ft (7.9 m) long with a longest span of 6 ft (1.8 m).

Who owns SH 31 over Hubbard Lake Spillway?

It is owned by the State Highway Agency.