US Bridges

US 79 over Mound Prairie CR

Fair

Anderson County, Texas · 6.0 MI E of US 287 · Structure no. 100010020601004

Built
1926
99 years old, rebuilt 1954
Condition
Fair
inspected December 2022
Type
Tee Beam
Concrete
Length
285 ft
10 main spans
Daily traffic
4,317
2020 count
Owner
State
State Highway Agency

About this bridge

US 79 over Mound Prairie CR is a concrete tee beam carrying US 79 over Mound Prairie CR in Anderson County, Texas. It was built in 1926 and reconstructed in 1954, so it is 99 years old, older than the Texas average of 44.4 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 4,317 vehicles a day, roughly 26% of them trucks, projected to reach 8,310 by 2033. The structure is 285 ft (86.9 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS 79
CrossesMound Prairie CR
Location6.0 MI E of US 287
RouteU.S. Route 79
CountyAnderson County
StateTexas
Coordinates31.82221, -95.55364
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadH 15
Structure length285 ft (86.9 m)
Longest span28 ft (8.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,317 (2020)
Projected traffic8,310 by 2033
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$20,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 79 over Mound Prairie CR built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1954.

What condition is US 79 over Mound Prairie CR 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 December 2022.

How much traffic does US 79 over Mound Prairie CR carry?

About 4,317 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is US 79 over Mound Prairie CR?

The structure is 285 ft (86.9 m) long with a longest span of 28 ft (8.5 m) and a deck 31 ft wide.

Who owns US 79 over Mound Prairie CR?

It is owned by the State Highway Agency.